Tooth LossNCT07632443
PMCF Study on The Performance and Safety of ON DENT® PMMA Discs/Blocks and Resin Products for Temporary Restorations
A study testing Temporary Fixed Prosthesis (Tempo-CAD Monocolor PMMA), Temporary Fixed Prosthesis (Tempo-CAD Monocolor SHT PMMA) and Temporary Fixed Prosthesis (Tempo-CAD Multicolor SHT PMMA) in people with Tooth Loss and Dentin Caries, run by On Dent Tibbi Malzeme Dis Protez Ith. ve Ihr. San. Ltd. Sti. at 1 site in Turkey (Türkiye).
Trial summary
This prospective, single-center, interventional post-market clinical follow-up (PMCF) study aims to evaluate the clinical performance and safety of temporary crown and bridge restorations fabricated using CE-marked ON DENT™ restorative materials throughout their functional intraoral clinical duration. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Tooth Loss, Dentin Caries, Tooth Fractures
- What is being tested?
- Temporary Fixed Prosthesis (Tempo-CAD Monocolor PMMA), Temporary Fixed Prosthesis (Tempo-CAD Monocolor SHT PMMA) and Temporary Fixed Prosthesis (Tempo-CAD Multicolor SHT PMMA)
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 120 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 5 Dec 2025to 4 Jul 2027
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Aged 18 years or older
- Male or female
- Requires 1/2/3-unit prosthetic restoration with temporary crown or bridge
- No active periodontal disease
- No general health condition contraindicated to treatment
- Not legally restricted (no military conscription, incarceration, or other legal restriction)
- Provision of signed informed consent form
Who cannot join
- Suspected or confirmed pregnancy,
- Temporomandibular joint disorder or limited mouth opening
- Deep subgingival margins (>0.5 mm)
- Non-restorable teeth
- Non-functional teeth (no opposing counterpart /antagonist)
- Probing depth >3 mm
Show all 13Show fewer
- Pathological tooth mobility
- Unfavorable occlusal relationship or parafunction (bruxism, etc.)
- Active systemic infection or condition/treatment that may impede treatment (radiotherapy, bisphosphonate use, etc.)
- Inadequate oral hygiene or cognitive/physical disorders impairing daily self-care maintenance.
- Uncontrolled alcohol, tobacco, or nicotine product use
- History of allergy or hypersensitivity to PMMA or resin components
- Concurrent participation in another interventional clinical study
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Turkey (Türkiye)1 site, 1 recruiting
- Recruiting
Ege University, Faculty of Dentistry, Department of Prosthodontics
Izmir, 35040
Mine Dundar Comlekoglu, Professor, +90 (532) 552 74 16, minedundar@yahoo.com
Ozgur Yasar, MD, Spec.
About this study
Official title: Post-Market Clinical Follow-Up (PMCF) Study Evaluating the Performance and Safety of ON DENT™ PMMA Disc/Block and Resin Products Used in Temporary Restoration Fabrication
This prospective, single-center, interventional post-market clinical follow-up (PMCF) study aims to evaluate the clinical performance and safety of temporary crown and bridge restorations fabricated using CE-marked ON DENT™ restorative materials throughout their functional intraoral clinical duration. A total of 120 adult patients requiring fixed prosthodontic treatments will be randomly assigned to four independent parallel groups (30 patients per group) based on the specific type of temporary material utilized: Tempo-CAD Monocolor PMMA, Tempo-CAD Monocolor SHT PMMA, Tempo-CAD Multicolor SHT PMMA, or Print On Cyclone Perma liquid resin. Patients will be monitored closely across 5 clinical visits up to a maximum duration of 6 months to assess prosthodontic survival, success rates, biological adaptations, and patient-reported quality of life outcomes.
Read the detailed description
This study is designed as a prospective, single-center, randomized, parallel-group clinical evaluation in Turkey to gather real-world data on PMMA polymer blocks and liquid resins manufactured by ON-DENT Ltd. Sti. Temporary fixed restorations play an essential role in protecting prepared natural teeth or dental implants, maintaining positional stability, and ensuring aesthetic and masticatory functions until the delivery of final definitive prostheses.
Participants meeting all eligibility criteria will be randomized via a balanced computer-generated Python permutation algorithm into four arms:
- Group A: ON DENT™ Tempo-CAD Monocolor PMMA Disc/Block
- Group B: ON DENT™ Tempo-CAD Monocolor SHT PMMA Disc/Block
- Group C: ON DENT™ Tempo-CAD Multicolor SHT PMMA Disc/Block
- Group D: ON DENT™ Print On Cyclone Perma 3D Printer Resin
Clinical and laboratory procedures are rigorously standardized to eliminate confounding variables across all study arms. All provisional restorations will be fabricated using uniform digital dental workflows at a single certified dental laboratory. For Groups A, B, and C, crowns and bridges will be produced via high-precision digital scanning, computer-aided design (CAD) software, and computerized milling units (CAD/CAM). For Group D, restorations will be processed through digital scanning, CAD software, and stereolithographic 3D printing methodologies utilizing digital light processing (DLP) technology. To ensure clinical standardization and minimize inter-operator variability, all clinical interventions, prosthodontic evaluations, and cementation workflows will be performed by prosthodontic investigators adhering to identical operational and clinical protocols, utilizing an identical temporary cement brand.
The evaluative timeline consists of five major operational checkpoints: Baseline (Visit 1: Tooth Preparation \& Impression), Visit 2 (Provisional Delivery at days 1-3), Visit 3 (Substructure Framework Try-in at day 8±2), Visit 4 (Aesthetic Try-in at day 12±2), and Visit 5 (Final Definitive Delivery at day 15±2). Longitudinal follow-up evaluations will cover the entire clinical service life of the temporary restorations up to a maximum duration of 6 months, explicitly tracking the period from initial tooth preparation until the formal delivery of the definitive prosthesis. All clinical, biological, and functional prosthodontic outcomes will be verified multi-dimensionally using the internationally recognized Revised World Dental Federation (FDI) Criteria.
- Conditions
- Tooth Loss, Dentin Caries, Tooth Fractures
- Being tested
- Temporary Fixed Prosthesis (Tempo-CAD Monocolor PMMA), Temporary Fixed Prosthesis (Tempo-CAD Monocolor SHT PMMA), Temporary Fixed Prosthesis (Tempo-CAD Multicolor SHT PMMA), Temporary Fixed Prosthesis (Print On - Cyclone Perma Resin)
- Keywords
- Post-Market Clinical Follow-Up (PMCF), Temporary Dental Restoration, Dental Prosthetics, Temporary Crown, Temporary Bridge, PMMA, Dental Resin, CAD/CAM Dentistry, Revised FDI Criteria
- Medical subject headings
- Tooth Loss, Tooth Fractures
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Temporary Fixed Prosthesis (Tempo-CAD Monocolor PMMA)Device
A custom-fabricated, 1-to-3 unit temporary fixed prosthodontic restoration (temporary crowns or bridges) produced through automated digital workflows. The provisional prosthesis is manufactured specifically from the ON DENT™ Tempo-CAD Monocolor PMMA (polymethyl methacrylate) disc/block restorative material via high-precision centralized CAD/CAM milling procedures. The restoration is clinically delivered and cemented using an identical temporary cement brand to serve as an interim fixed dental prosthesis during the evaluative period.
Temporary Fixed Prosthesis (Tempo-CAD Monocolor SHT PMMA)Device
A custom-fabricated, 1-to-3 unit temporary fixed prosthodontic restoration (temporary crowns or bridges) produced through automated digital workflows. The provisional prosthesis is manufactured specifically from the ON DENT™ Tempo-CAD Monocolor SHT (super-high translucent) PMMA disc/block restorative material via high-precision centralized CAD/CAM milling procedures. The restoration is clinically delivered and cemented using an identical temporary cement brand to serve as an interim fixed dental prosthesis during the evaluative period.
Temporary Fixed Prosthesis (Tempo-CAD Multicolor SHT PMMA)Device
A custom-fabricated, 1-to-3 unit temporary fixed prosthodontic restoration (temporary crowns or bridges) produced through automated digital workflows. The provisional prosthesis is manufactured specifically from the ON DENT™ Tempo-CAD Multicolor SHT (super-high translucent) multi-layered PMMA disc/block restorative material via high-precision centralized CAD/CAM milling procedures. The restoration is clinically delivered and cemented using an identical temporary cement brand to serve as an interim fixed dental prosthesis during the evaluative period.
Temporary Fixed Prosthesis (Print On - Cyclone Perma Resin)Device
A custom-fabricated, 1-to-3 unit temporary fixed prosthodontic restoration (temporary crowns or bridges) produced through automated digital workflows. The provisional prosthesis is manufactured specifically from the ON DENT™ Print On Cyclone Perma fluid, light-curable dimethacrylate-based photopolymer acrylic resin material via centralized stereolithographic 3D printing utilizing DLP (digital light processing) technology. The restoration is clinically delivered and cemented using an identical temporary cement brand to serve as an interim fixed dental prosthesis during the evaluative period.
| Study group | Role | What they receive |
|---|---|---|
| MONOCOLOR PMMA | Experimental | This study arm comprising 30 adult patients who will receive 1-to-3 unit temporary crown or bridge restorations fabricated from monocolor polymethyl methacrylate (PMMA) discs/blocks. The provisional prostheses will be designed using specialized computer-aided design (CAD) software and manufactured via computerized milling units (CAM). Following clinical delivery with a standardized temporary cement, the restorations will undergo prospective performance and safety evaluations using the Revised FDI Criteria. Data collected for this cohort will be analyzed and reported independently utilizing descriptive statistics and longitudinal intra-group analyses, with no direct statistical comparison intended between independent arms. Receives: Device: Temporary Fixed Prosthesis (Tempo-CAD Monocolor PMMA) |
| MONOCOLOR SHT PMMA | Experimental | This study arm comprising 30 adult patients who will receive 1-to-3 unit temporary crown or bridge restorations fabricated from monocolor super-high translucent (SHT) polymethyl methacrylate (PMMA) discs/blocks. The provisional prostheses will be designed using specialized computer-aided design (CAD) software and manufactured via computerized milling units (CAM). Following clinical delivery with a standardized temporary cement, the restorations will undergo prospective performance and safety evaluations using the Revised FDI Criteria. Data collected for this cohort will be analyzed and reported independently utilizing descriptive statistics and longitudinal intra-group analyses, with no direct statistical comparison intended between independent arms. Receives: Device: Temporary Fixed Prosthesis (Tempo-CAD Monocolor SHT PMMA) |
| MULTICOLOR SHT PMMA | Experimental | This study arm comprising 30 adult patients who will receive 1-to-3 unit temporary crown or bridge restorations fabricated from multi-layered (multicolor) super-high translucent (SHT) polymethyl methacrylate (PMMA) discs/blocks. The provisional prostheses will be designed using specialized computer-aided design (CAD) software and manufactured via computerized milling units (CAM). Following clinical delivery with a standardized temporary cement, the restorations will undergo prospective performance and safety evaluations using the Revised FDI Criteria. Data collected for this cohort will be analyzed and reported independently utilizing descriptive statistics and longitudinal intra-group analyses, with no direct statistical comparison intended between independent arms. Receives: Device: Temporary Fixed Prosthesis (Tempo-CAD Multicolor SHT PMMA) |
| 3D Printer Resin | Experimental | This study arm comprising 30 adult patients who will receive 1-to-3 unit temporary crown or bridge restorations fabricated from fluid, light-curable dimethacrylate-based photopolymer resin. The provisional prostheses will be designed using specialized computer-aided design (CAD) software and manufactured through stereolithographic 3D printing utilizing Digital Light Processing (DLP) technology. Following clinical delivery with a standardized temporary cement, the restorations will undergo prospective performance and safety evaluations using the Revised FDI Criteria. Data collected for this cohort will be analyzed and reported independently utilizing descriptive statistics and longitudinal intra-group analyses, with no direct statistical comparison intended between independent arms. Receives: Device: Temporary Fixed Prosthesis (Print On - Cyclone Perma Resin) |
What is being measured
The primary outcome is the main question the study is designed to answer.
Success Rate of Temporary Fixed Restorations
The success rate of the provisional restorations will be evaluated using the Revised World Dental Federation (FDI) criteria. For statistical analysis, the 5-point scale data will be dichotomized into "sufficient" and "insufficient" categories. Restorations scoring 1 to 3 points-representing clinically excellent/very good (1), clinically good (2), or clinically satisfactory (3) status-will be categorized as "sufficient" (success). Restorations scoring 4 (clinically insufficient/partially insufficient) or 5 (clinically poor/completely insufficient) points will be categorized as "insufficient" (failure). The success rate will be calculated as the final percentage of sufficient restorations within each independent arm.
Measured: At the final evaluation visit (Visit 5/up to 6 months).
Survival Rate of Temporary Fixed Restorations
The survival rate of the provisional restorations will be evaluated using the Revised FDI criteria. The calculation of the survival rate uses the dichotomization of the data into "restoration present including repaired" (scores 1-4) and "not present/failed" (score 5). Restorations scoring 1 to 4 points-encompassing all clinically sufficient statuses (1-3) and those evaluated as clinically insufficient but retained in function via repair or re-cementation (4)-will be categorized as "restoration present including repaired" (survived). Restorations scoring 5 points, indicating completely insufficient status or a restoration that is no longer present, will be categorized as "not present/failed". Cumulative survival probabilities over time will be estimated using the Kaplan-Meier method.
Measured: Throughout follow-up period (up to 6 months).
Incidence of Clinical Complications
The safety and clinical durability profiles of the provisional fixed dental restorations will be evaluated based on the frequency and specific types of technical, mechanical, or biological complications documented during the follow-up period. Data will be analyzed and reported independently for each study arm as the absolute count (n) and the percentage (%) of restorations experiencing at least one complication, utilizing descriptive and intra-group longitudinal statistics
Measured: Throughout follow-up period (up to 6 months).
Incidence of Adverse Events (AE) and Serious Adverse Events (SAE)
Safety and tolerability tracking evaluated through the occurrence, severity, and causality-related frequencies of any reported Adverse Events (AE), Serious Adverse Events (SAE), and device deficiencies. Evaluations are conducted in accordance with the Medical Device Coordination Group (MDCG 2020-10/1) guidelines. Data will be analyzed independently within each device arm, reporting the absolute number of events and the percentage of participants affected.
Measured: Throughout follow-up period (up to 6 months).
Secondary outcomes (3)
Clinical Evaluation of Masticatory Function (Occlusion Quality)
Objective clinical evaluation of the chewing function through occlusal contact distribution. The assessment will be performed using extra-thin articulation paper (<10 μm) under light masticatory force in centric relation. The examining dentist will evaluate whether ideal occlusal contact is established and if forces are evenly distributed across the dental arch (recorded as a binary outcome: "Yes/Acceptable Occlusion" or "No/Unacceptable Occlusion"). Data will be reported as the frequency and percentage of successful occlusal alignment within each independent study arm, tracking longitudinal intra-group changes.
Measured: Baseline (pre-treatment at Visit 1) and at all subsequent follow-up checkpoints (Visit 2, Visit 3, Visit 4, and Visit 5/up to 6 months).
Patient-Reported Masticatory Satisfaction
Subjective patient-reported evaluation of satisfaction regarding chewing efficiency and functional comfort. This parameter will be quantified using a standard 5-point Likert scale, ranging from a score of 1 ("Not satisfied at all") to 5 ("Very satisfied"). Higher summary scores represent superior patient-reported functional comfort. Statistical analysis will be performed independently within each arm using longitudinal descriptive statistics to monitor changes from baseline.
Measured: Baseline (pre-treatment at Visit 1) and at all subsequent follow-up checkpoints (Visit 2, Visit 3, Visit 4, and Visit 5/up to 6 months).
Oral Health-Related Quality of Life (OHRQoL)
Oral health-related quality of life will be measured using the validated Turkish version of the Oral Health Impact Profile-14 (OHIP-14) questionnaire. The instrument evaluates 14 items distributed across 7 conceptual subdomains (functional limitation, physical pain, psychological discomfort, physical disability, psychological disability, social disability, and social disadvantage). Each item is scored on a 5-point Likert scale from 0 ("Never") to 4 ("Very often"). Total summary scores range from 0 to 56, where lower overall scores represent better OHRQoL and higher scores indicate a greater negative impact of oral health conditions. Analysis will track the longitudinal shift within each independent arm.
Measured: Baseline (pre-treatment at Visit 1) and at the final follow-up/definitive delivery checkpoint (Visit 5/up to 6 months).
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted8 Jun 2026
- Study start5 Dec 2025
- Primary completion4 Mar 2027 (estimated)
- Study completion4 Jul 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Tooth LossStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Model description
- This PMCF study employs a multi-arm, parallel design to independently evaluate the clinical performance and safety of temporary crown and bridge restorations fabricated from four distinct device models (n=30 per cohort). While participants are randomly assigned to ensure an unbiased distribution across the four study arms, each arm serves as an independent observational cohort representing a specific material composition and manufacturing methodology (milled PMMA variations vs. 3D-printed liquid resin). Statistical evaluations will be performed independently for each of the four groups using descriptive, longitudinal, and survival statistics. No between-arm hypothesis testing or direct cross-group statistical comparisons are intended, as the primary objective is to independently gather real-world evidence for each individual medical device.
- Masking
- None (open label)
- Enrolment
- 120 participants (estimated)
Sponsor and investigators
- Lead sponsor
- On Dent Tibbi Malzeme Dis Protez Ith. ve Ihr. San. Ltd. Sti.
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- Mine Dundar Comlekoglu, Principal investigator, Ege University, Faculty of Dentistry, Department of Prosthodontics
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07632443
- Sponsor's protocol ID
- INFO ON DENT GR
- Other IDs
- 2025-080
- Status last verified
- May 2026
- First submitted
- 2 Jun 2026
- Last updated
- 10 Jun 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No: Individual Participant Data (IPD) will not be shared publicly due to the strict confidentiality requirements, personal data protection legislation (KVKK Law No. 6698), and commercial intellectual property rights policies of the sponsor.
Study at a glance
From the registry record, last updated by the sponsor on 10 Jun 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Post-Market Clinical Follow-Up (PMCF) Study Evaluating the Performance and Safety of ON DENT™ PMMA Disc/Block and Resin Products Used in Temporary Restoration Fabrication
- ClinicalTrials.gov ID
- NCT07632443
- Acronym / sponsor ID
- INFO ON DENT GR
- Conditions
- Tooth Loss, Dentin Caries, Tooth Fractures
- Keywords
- Post-Market Clinical Follow-Up (PMCF), Temporary Dental Restoration, Dental Prosthetics, Temporary Crown, Temporary Bridge, PMMA, Dental Resin, CAD/CAM Dentistry
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 120 participants (estimated)
- Lead sponsor
- On Dent Tibbi Malzeme Dis Protez Ith. ve Ihr. San. Ltd. Sti.Industry (pharma, biotech, devices)
- Study start
- 5 Dec 2025 (actual)
- Primary completion
- 4 Mar 2027 (estimated)
- Study completion
- 4 Jul 2027 (estimated)
- First posted
- 8 Jun 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This prospective, single-center, interventional post-market clinical follow-up (PMCF) study aims to evaluate the clinical performance and safety of temporary crown and bridge restorations fabricated using CE-marked ON DENT™ restorative materials throughout their functional intraoral clinical duration. A total of 120 adult patients requiring fixed prosthodontic treatments will be randomly assigned to four independent parallel groups (30 patients per group) based on the specific type of temporary material utilized: Tempo-CAD Monocolor PMMA, Tempo-CAD Monocolor SHT PMMA, Tempo-CAD Multicolor SHT PMMA, or Print On Cyclone Perma liquid resin. Patients will be monitored closely across 5 clinical visits up to a maximum duration of 6 months to assess prosthodontic survival, success rates, biological adaptations, and patient-reported quality of life outcomes.
Detailed description
This study is designed as a prospective, single-center, randomized, parallel-group clinical evaluation in Turkey to gather real-world data on PMMA polymer blocks and liquid resins manufactured by ON-DENT Ltd. Sti. Temporary fixed restorations play an essential role in protecting prepared natural teeth or dental implants, maintaining positional stability, and ensuring aesthetic and masticatory functions until the delivery of final definitive prostheses.
Participants meeting all eligibility criteria will be randomized via a balanced computer-generated Python permutation algorithm into four arms:
- Group A: ON DENT™ Tempo-CAD Monocolor PMMA Disc/Block
- Group B: ON DENT™ Tempo-CAD Monocolor SHT PMMA Disc/Block
- Group C: ON DENT™ Tempo-CAD Multicolor SHT PMMA Disc/Block
- Group D: ON DENT™ Print On Cyclone Perma 3D Printer Resin
Clinical and laboratory procedures are rigorously standardized to eliminate confounding variables across all study arms. All provisional restorations will be fabricated using uniform digital dental workflows at a single certified dental laboratory. For Groups A, B, and C, crowns and bridges will be produced via high-precision digital scanning, computer-aided design (CAD) software, and computerized milling units (CAD/CAM). For Group D, restorations will be processed through digital scanning, CAD software, and stereolithographic 3D printing methodologies utilizing digital light processing (DLP) technology. To ensure clinical standardization and minimize inter-operator variability, all clinical interventions, prosthodontic evaluations, and cementation workflows will be performed by prosthodontic investigators adhering to identical operational and clinical protocols, utilizing an identical temporary cement brand.
The evaluative timeline consists of five major operational checkpoints: Baseline (Visit 1: Tooth Preparation \& Impression), Visit 2 (Provisional Delivery at days 1-3), Visit 3 (Substructure Framework Try-in at day 8±2), Visit 4 (Aesthetic Try-in at day 12±2), and Visit 5 (Final Definitive Delivery at day 15±2). Longitudinal follow-up evaluations will cover the entire clinical service life of the temporary restorations up to a maximum duration of 6 months, explicitly tracking the period from initial tooth preparation until the formal delivery of the definitive prosthesis. All clinical, biological, and functional prosthodontic outcomes will be verified multi-dimensionally using the internationally recognized Revised World Dental Federation (FDI) Criteria.
Study design
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 4
- Model description
- This PMCF study employs a multi-arm, parallel design to independently evaluate the clinical performance and safety of temporary crown and bridge restorations fabricated from four distinct device models (n=30 per cohort). While participants are randomly assigned to ensure an unbiased distribution across the four study arms, each arm serves as an independent observational cohort representing a specific material composition and manufacturing methodology (milled PMMA variations vs. 3D-printed liquid resin). Statistical evaluations will be performed independently for each of the four groups using descriptive, longitudinal, and survival statistics. No between-arm hypothesis testing or direct cross-group statistical comparisons are intended, as the primary objective is to independently gather real-world evidence for each individual medical device.
| Arm | Type | Receives |
|---|---|---|
| MONOCOLOR PMMA | Experimental | Device: Temporary Fixed Prosthesis (Tempo-CAD Monocolor PMMA)This study arm comprising 30 adult patients who will receive 1-to-3 unit temporary crown or bridge restorations fabricated from monocolor polymethyl methacrylate (PMMA) discs/blocks. The provisional prostheses will be designed using specialized computer-aided design (CAD) software and manufactured via computerized milling units (CAM). Following clinical delivery with a standardized temporary cement, the restorations will undergo prospective performance and safety evaluations using the Revised FDI Criteria. Data collected for this cohort will be analyzed and reported independently utilizing descriptive statistics and longitudinal intra-group analyses, with no direct statistical comparison intended between independent arms. |
| MONOCOLOR SHT PMMA | Experimental | Device: Temporary Fixed Prosthesis (Tempo-CAD Monocolor SHT PMMA)This study arm comprising 30 adult patients who will receive 1-to-3 unit temporary crown or bridge restorations fabricated from monocolor super-high translucent (SHT) polymethyl methacrylate (PMMA) discs/blocks. The provisional prostheses will be designed using specialized computer-aided design (CAD) software and manufactured via computerized milling units (CAM). Following clinical delivery with a standardized temporary cement, the restorations will undergo prospective performance and safety evaluations using the Revised FDI Criteria. Data collected for this cohort will be analyzed and reported independently utilizing descriptive statistics and longitudinal intra-group analyses, with no direct statistical comparison intended between independent arms. |
| MULTICOLOR SHT PMMA | Experimental | Device: Temporary Fixed Prosthesis (Tempo-CAD Multicolor SHT PMMA)This study arm comprising 30 adult patients who will receive 1-to-3 unit temporary crown or bridge restorations fabricated from multi-layered (multicolor) super-high translucent (SHT) polymethyl methacrylate (PMMA) discs/blocks. The provisional prostheses will be designed using specialized computer-aided design (CAD) software and manufactured via computerized milling units (CAM). Following clinical delivery with a standardized temporary cement, the restorations will undergo prospective performance and safety evaluations using the Revised FDI Criteria. Data collected for this cohort will be analyzed and reported independently utilizing descriptive statistics and longitudinal intra-group analyses, with no direct statistical comparison intended between independent arms. |
| 3D Printer Resin | Experimental | Device: Temporary Fixed Prosthesis (Print On - Cyclone Perma Resin)This study arm comprising 30 adult patients who will receive 1-to-3 unit temporary crown or bridge restorations fabricated from fluid, light-curable dimethacrylate-based photopolymer resin. The provisional prostheses will be designed using specialized computer-aided design (CAD) software and manufactured through stereolithographic 3D printing utilizing Digital Light Processing (DLP) technology. Following clinical delivery with a standardized temporary cement, the restorations will undergo prospective performance and safety evaluations using the Revised FDI Criteria. Data collected for this cohort will be analyzed and reported independently utilizing descriptive statistics and longitudinal intra-group analyses, with no direct statistical comparison intended between independent arms. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (7 listed)
- Aged 18 years or older
- Male or female
- Requires 1/2/3-unit prosthetic restoration with temporary crown or bridge
- No active periodontal disease
- No general health condition contraindicated to treatment
Key exclusion criteria (13 listed)
- Suspected or confirmed pregnancy,
- Temporomandibular joint disorder or limited mouth opening
- Deep subgingival margins (>0.5 mm)
- Non-restorable teeth
- Non-functional teeth (no opposing counterpart /antagonist)
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Temporary Fixed Prosthesis (Tempo-CAD Monocolor PMMA)A custom-fabricated, 1-to-3 unit temporary fixed prosthodontic restoration (temporary crowns or bridges) produced through automated digital workflows. The provisional prosthesis is manufactured specifically from the ON DENT™ Tempo-CAD Monocolor PMMA (polymethyl methacrylate) disc/block restorative material via high-precision centralized CAD/CAM milling procedures. The restoration is clinically delivered and cemented using an identical temporary cement brand to serve as an interim fixed dental prosthesis during the evaluative period. | Device | MONOCOLOR PMMA |
| Temporary Fixed Prosthesis (Tempo-CAD Monocolor SHT PMMA)A custom-fabricated, 1-to-3 unit temporary fixed prosthodontic restoration (temporary crowns or bridges) produced through automated digital workflows. The provisional prosthesis is manufactured specifically from the ON DENT™ Tempo-CAD Monocolor SHT (super-high translucent) PMMA disc/block restorative material via high-precision centralized CAD/CAM milling procedures. The restoration is clinically delivered and cemented using an identical temporary cement brand to serve as an interim fixed dental prosthesis during the evaluative period. | Device | MONOCOLOR SHT PMMA |
| Temporary Fixed Prosthesis (Tempo-CAD Multicolor SHT PMMA)A custom-fabricated, 1-to-3 unit temporary fixed prosthodontic restoration (temporary crowns or bridges) produced through automated digital workflows. The provisional prosthesis is manufactured specifically from the ON DENT™ Tempo-CAD Multicolor SHT (super-high translucent) multi-layered PMMA disc/block restorative material via high-precision centralized CAD/CAM milling procedures. The restoration is clinically delivered and cemented using an identical temporary cement brand to serve as an interim fixed dental prosthesis during the evaluative period. | Device | MULTICOLOR SHT PMMA |
| Temporary Fixed Prosthesis (Print On - Cyclone Perma Resin)A custom-fabricated, 1-to-3 unit temporary fixed prosthodontic restoration (temporary crowns or bridges) produced through automated digital workflows. The provisional prosthesis is manufactured specifically from the ON DENT™ Print On Cyclone Perma fluid, light-curable dimethacrylate-based photopolymer acrylic resin material via centralized stereolithographic 3D printing utilizing DLP (digital light processing) technology. The restoration is clinically delivered and cemented using an identical temporary cement brand to serve as an interim fixed dental prosthesis during the evaluative period. | Device | 3D Printer Resin |
Primary outcome
Success Rate of Temporary Fixed Restorations
Time frame: At the final evaluation visit (Visit 5/up to 6 months).
The success rate of the provisional restorations will be evaluated using the Revised World Dental Federation (FDI) criteria. For statistical analysis, the 5-point scale data will be dichotomized into "sufficient" and "insufficient" categories. Restorations scoring 1 to 3 points-representing clinically excellent/very good (1), clinically good (2), or clinically satisfactory (3) status-will be categorized as "sufficient" (success). Restorations scoring 4 (clinically insufficient/partially insufficient) or 5 (clinically poor/completely insufficient) points will be categorized as "insufficient" (failure). The success rate will be calculated as the final percentage of sufficient restorations within each independent arm.
Survival Rate of Temporary Fixed Restorations
Time frame: Throughout follow-up period (up to 6 months).
The survival rate of the provisional restorations will be evaluated using the Revised FDI criteria. The calculation of the survival rate uses the dichotomization of the data into "restoration present including repaired" (scores 1-4) and "not present/failed" (score 5). Restorations scoring 1 to 4 points-encompassing all clinically sufficient statuses (1-3) and those evaluated as clinically insufficient but retained in function via repair or re-cementation (4)-will be categorized as "restoration present including repaired" (survived). Restorations scoring 5 points, indicating completely insufficient status or a restoration that is no longer present, will be categorized as "not present/failed". Cumulative survival probabilities over time will be estimated using the Kaplan-Meier method.
Incidence of Clinical Complications
Time frame: Throughout follow-up period (up to 6 months).
The safety and clinical durability profiles of the provisional fixed dental restorations will be evaluated based on the frequency and specific types of technical, mechanical, or biological complications documented during the follow-up period. Data will be analyzed and reported independently for each study arm as the absolute count (n) and the percentage (%) of restorations experiencing at least one complication, utilizing descriptive and intra-group longitudinal statistics
Incidence of Adverse Events (AE) and Serious Adverse Events (SAE)
Time frame: Throughout follow-up period (up to 6 months).
Safety and tolerability tracking evaluated through the occurrence, severity, and causality-related frequencies of any reported Adverse Events (AE), Serious Adverse Events (SAE), and device deficiencies. Evaluations are conducted in accordance with the Medical Device Coordination Group (MDCG 2020-10/1) guidelines. Data will be analyzed independently within each device arm, reporting the absolute number of events and the percentage of participants affected.
3 secondary outcomes
Clinical Evaluation of Masticatory Function (Occlusion Quality)
Time frame: Baseline (pre-treatment at Visit 1) and at all subsequent follow-up checkpoints (Visit 2, Visit 3, Visit 4, and Visit 5/up to 6 months).
Patient-Reported Masticatory Satisfaction
Time frame: Baseline (pre-treatment at Visit 1) and at all subsequent follow-up checkpoints (Visit 2, Visit 3, Visit 4, and Visit 5/up to 6 months).
Oral Health-Related Quality of Life (OHRQoL)
Time frame: Baseline (pre-treatment at Visit 1) and at the final follow-up/definitive delivery checkpoint (Visit 5/up to 6 months).
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 10 Jun 2026.
- Individual participant dataSharing planned: No. Individual Participant Data (IPD) will not be shared publicly due to the strict confidentiality requirements, personal data protection legislation (KVKK Law No. 6698), and commercial intellectual property rights policies of the sponsor.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Mine Dundar Comlekoglu principal investigator
Ege University, Faculty of Dentistry, Department of Prosthodontics
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Temporary Fixed Prosthesis (Tempo-CAD Monocolor PMMA), Temporary Fixed Prosthesis (Tempo-CAD Monocolor SHT PMMA) and Temporary Fixed Prosthesis (Tempo-CAD Multicolor SHT PMMA) in people with Tooth Loss and Dentin Caries, run by On Dent Tibbi Malzeme Dis Protez Ith. ve Ihr. San. Ltd. Sti. at 1 site in Turkey (Türkiye).
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 7 inclusion and 13 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 10 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Turkey (Türkiye). Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Nurten Ozdenler, Sponsor Rep (+90 (232) 253 2577, nurten@on-dent.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Success Rate of Temporary Fixed Restorations (time frame: At the final evaluation visit (Visit 5/up to 6 months).). The study lists 4 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 10 Jun 2026; AzTrials last refreshed its copy on 26 Oct 2026.