Bone Loss, AlveolarNCT04144322
Short Dental Implants (5 mm) Versus Long Dental Implants (10 mm)
A study testing Zimmer T3 Short Ex Hex With Discrete Crystalline Deposition and Zimmer T3 with Discrete Crystalline Deposition Ex Hex Parallel Walled implants in people with Bone Loss, Alveolar, run by University of Michigan at 1 site in United States.
Trial summary
The purpose of this study is to evaluate the survival rate of 5 mm short implants compared to longer implants (10 mm) placed in sinus-grafted sites. Primary aim: Compare bone loss between the two groups Secondary aim: Compare surgical time and patient-reported outcomes (satisfaction and post-operative pain) Read more about this study
- Who is it for?
- Ages 20 to 70 yearsHealthy volunteers can take part
- Conditions the study is for
- Bone Loss, Alveolar
- What is being tested?
- Zimmer T3 Short Ex Hex With Discrete Crystalline Deposition and Zimmer T3 with Discrete Crystalline Deposition Ex Hex Parallel Walled implants
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 34 participants
- Where
- 1 siteUnited States
- Study dates
- 14 Oct 2019to 22 Apr 2024
- Phase
- Interventional
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
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 20 to 70 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Age 20-70 years at enrollment
- Systemically healthy patients
- Full-mouth plaque score and full-mouth bleeding score ≤ 30% (measured at four sites per tooth)
- In need of one premolar or 1st molar dental implant in the maxillary area
- Neighboring teeth to the planned implant must have natural root(s) or implant supported restoration.
- Presence of natural tooth/teeth, partial prosthesis and/or implants in the opposite jaw in contact with the planned crown/s deemed by the investigator as likely to present an initially stable implant situation
- Residual bone height under the maxillary sinus between 5 to 7 mm and a width of at least 7 mm, as measured on cone beam computer tomography (CBCT) scans.
Who cannot join
- Unlikely to be able to comply with study procedures
- Uncontrolled pathologic processes in the oral cavity
- History of head and neck chemotherapy within 5 years prior to surgery
- Systemic or local disease or condition that could compromise post-operative healing and/or osseointegration
- Uncontrolled diabetes mellitus HbA1c >8
- Taking corticosteroids, IV bisphosphonates, or any other medication that could influence post-operative healing and/or osseointegration
Show all 10Show fewer
- Smokes more than 10 cigarettes/day
- Bruxer
- Present alcohol and/or drug abuser
- Pregnant, unsure pregnancy status, or lactating females (self-reported)
Trial locations and contacts
1 site in 1 country.
United States1 site
University of Michigan School of Dentistry
Ann Arbor, Michigan, 48109
About this study
Official title: Short Dental Implants (5 mm) Versus Long Dental Implants (10 mm) in Combination With Sinus Floor Elevation: A Randomized Clinical Trial
The purpose of this study is to evaluate the survival rate of 5 mm short implants compared to longer implants (10 mm) placed in sinus-grafted sites.
Primary aim: Compare bone loss between the two groups Secondary aim: Compare surgical time and patient-reported outcomes (satisfaction and post-operative pain)
Read the detailed description
34 patients requiring an implant to replace an upper missing tooth in the premolar or 1st molar area with a bone crest height from 5 to 8 mm will be recruited for this trial. Patients will be randomized to either the test (5-mm implant) or control group (10-mm implant) using a computer-generated randomization list . 17 patients will receive a sinus lift procedure, bone graft, and 10 mm implant while the other 17 patients will receive a 5 mm short implant.
- Conditions
- Bone Loss, Alveolar
- Being tested
- Zimmer T3 Short Ex Hex With Discrete Crystalline Deposition, Zimmer T3 with Discrete Crystalline Deposition Ex Hex Parallel Walled implants
- Medical subject headings
- Alveolar Bone Loss
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Zimmer T3 Short Ex Hex With Discrete Crystalline DepositionDevice
Placement of a short implant
Zimmer T3 with Discrete Crystalline Deposition Ex Hex Parallel Walled implantsDevice
Placement of a long implant with sinus lift and bone graft
| Study group | Role | What they receive |
|---|---|---|
| Short Implant | Other | 17 patients will receive a 5 mm short implant. Receives: Device: Zimmer T3 Short Ex Hex With Discrete Crystalline Deposition |
| Long Implant | Other | 17 patients will receive a sinus lift procedure, bone graft, and 10 mm implant. Receives: Device: Zimmer T3 with Discrete Crystalline Deposition Ex Hex Parallel Walled implants |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in Mesial-distal (M-D) Bone Loss
Comparing mesial-distal (M-D) bone loss between the two groups. This will be measured in millimeters using standardized radiographs of the implant site at the screening visit, surgical visit, 4 months post-op, 5 months post-op, 12 months post-op, and 24 months post-op visits.
Measured: Baseline, surgical visit 1 day, 4 months, 5 months, 12 months, 24 months
Secondary outcomes (3)
Survival Rate
The survival rate of the two groups will be recorded as a percentage at the 5 month post-op, 12 month post-op, and 24 month post-op visits based on clinician assessment.
Measured: 5 month post-op, 12 month post-op, and 24 month post-op visits
Number of Sites With Bleeding on Probing
The number of sites with bleeding on probing will be compared between the two groups. Bleeding on probing of the implant site will be measured with a periodontal probe at the 5 month post-op, 12 month post-op, and 24 month post-op visits.
Measured: 5 month post-op, 12 month post-op, and 24 month post-op visits
Probing Pocket Depth
The probing pocket depths will be compared between the two groups. Probing depths of the implant site will be measured with a periodontal probe at the 5 month post-op, 12 month post-op, and 24 month post-op visits.
Measured: 5 month post-op, 12 month post-op, and 24 month post-op visits
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted30 Oct 2019
- Study start14 Oct 2019
- Primary completion22 Apr 2024
- Study completion22 Apr 2024
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (13)Papers the sponsor has linked to this study.
- Other trials for Bone Loss, AlveolarStudies of the same condition, open and under way.
- More trials run by University of MichiganThe sponsor's other registered studies.
- 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
- Masking
- None (open label)
- Enrolment
- 34 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Michigan
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Tae-Ju Oh, University of Michigan
- Investigators
- Tae-Ju Oh, Principal investigator, University of Michigan
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04144322
- Sponsor's protocol ID
- HUM00151047
- Status last verified
- May 2025
- First submitted
- 28 Oct 2019
- Last updated
- 6 May 2025
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- Yes
- Individual data sharing
- Undecided
Publications
Anitua E, Alkhraist MH, Pinas L, Begona L, Orive G. Implant survival and crestal bone loss around extra-short implants supporting a fixed denture: the effect of crown height space, crown-to-implant ratio, and offset placement of the prosthesis. Int J Oral Maxillofac Implants. 2014 May-Jun;29(3):682-9. doi: 10.11607/jomi.3404.
PubMed 24818208Anitua E, Pinas L, Orive G. Retrospective study of short and extra-short implants placed in posterior regions: influence of crown-to-implant ratio on marginal bone loss. Clin Implant Dent Relat Res. 2015 Feb;17(1):102-10. doi: 10.1111/cid.12073. Epub 2013 May 8.
PubMed 23656303Buser D, Janner SF, Wittneben JG, Bragger U, Ramseier CA, Salvi GE. 10-year survival and success rates of 511 titanium implants with a sandblasted and acid-etched surface: a retrospective study in 303 partially edentulous patients. Clin Implant Dent Relat Res. 2012 Dec;14(6):839-51. doi: 10.1111/j.1708-8208.2012.00456.x.
PubMed 22897683Sargozaie N, Moeintaghavi A, Shojaie H. Comparing the Quality of Life of Patients Requesting Dental Implants Before and After Implant. Open Dent J. 2017 Aug 31;11:485-491. doi: 10.2174/1874210601711010485. eCollection 2017.
PubMed 29114333Pieri F, Forlivesi C, Caselli E, Corinaldesi G. Short implants (6mm) vs. vertical bone augmentation and standard-length implants (>/=9mm) in atrophic posterior mandibles: a 5-year retrospective study. Int J Oral Maxillofac Surg. 2017 Dec;46(12):1607-1614. doi: 10.1016/j.ijom.2017.07.005. Epub 2017 Jul 24.
PubMed 28751181Lemos CA, Ferro-Alves ML, Okamoto R, Mendonca MR, Pellizzer EP. Short dental implants versus standard dental implants placed in the posterior jaws: A systematic review and meta-analysis. J Dent. 2016 Apr;47:8-17. doi: 10.1016/j.jdent.2016.01.005. Epub 2016 Jan 19.
PubMed 26804969Garaicoa-Pazmino C, Suarez-Lopez del Amo F, Monje A, Catena A, Ortega-Oller I, Galindo-Moreno P, Wang HL. Influence of crown/implant ratio on marginal bone loss: a systematic review. J Periodontol. 2014 Sep;85(9):1214-21. doi: 10.1902/jop.2014.130615. Epub 2014 Jan 20.
PubMed 24444399Fan T, Li Y, Deng WW, Wu T, Zhang W. Short Implants (5 to 8 mm) Versus Longer Implants (>8 mm) with Sinus Lifting in Atrophic Posterior Maxilla: A Meta-Analysis of RCTs. Clin Implant Dent Relat Res. 2017 Feb;19(1):207-215. doi: 10.1111/cid.12432. Epub 2016 Jun 13.
PubMed 27295262Chappuis V, Araujo MG, Buser D. Clinical relevance of dimensional bone and soft tissue alterations post-extraction in esthetic sites. Periodontol 2000. 2017 Feb;73(1):73-83. doi: 10.1111/prd.12167.
PubMed 28000281Schneider CA, Rasband WS, Eliceiri KW. NIH Image to ImageJ: 25 years of image analysis. Nat Methods. 2012 Jul;9(7):671-5. doi: 10.1038/nmeth.2089.
PubMed 22930834Strietzel FP, Reichart PA. Oral rehabilitation using Camlog screw-cylinder implants with a particle-blasted and acid-etched microstructured surface. Results from a prospective study with special consideration of short implants. Clin Oral Implants Res. 2007 Oct;18(5):591-600. doi: 10.1111/j.1600-0501.2007.01375.x. Epub 2007 Jun 21.
PubMed 17590161Telleman G, Raghoebar GM, Vissink A, Meijer HJ. Impact of platform switching on peri-implant bone remodeling around short implants in the posterior region, 1-year results from a split-mouth clinical trial. Clin Implant Dent Relat Res. 2014 Feb;16(1):70-80. doi: 10.1111/j.1708-8208.2012.00461.x. Epub 2012 May 11.
PubMed 22577959Thoma DS, Haas R, Sporniak-Tutak K, Garcia A, Taylor TD, Hammerle CHF. Randomized controlled multicentre study comparing short dental implants (6 mm) versus longer dental implants (11-15 mm) in combination with sinus floor elevation procedures: 5-Year data. J Clin Periodontol. 2018 Dec;45(12):1465-1474. doi: 10.1111/jcpe.13025. Epub 2018 Nov 25.
PubMed 30341961
Study at a glance
From the registry record, last updated by the sponsor on 6 May 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Short Dental Implants (5 mm) Versus Long Dental Implants (10 mm) in Combination With Sinus Floor Elevation: A Randomized Clinical Trial
- ClinicalTrials.gov ID
- NCT04144322
- Acronym / sponsor ID
- HUM00151047
- Conditions
- Bone Loss, Alveolar
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 34 participants (actual)
- Lead sponsor
- University of MichiganUniversity, hospital or other
- Study start
- 14 Oct 2019 (actual)
- Primary completion
- 22 Apr 2024 (actual)
- Study completion
- 22 Apr 2024 (actual)
- First posted
- 30 Oct 2019 (actual)
- Results
- Posted 6 May 2025
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to evaluate the survival rate of 5 mm short implants compared to longer implants (10 mm) placed in sinus-grafted sites.
Primary aim: Compare bone loss between the two groups Secondary aim: Compare surgical time and patient-reported outcomes (satisfaction and post-operative pain)
Detailed description
34 patients requiring an implant to replace an upper missing tooth in the premolar or 1st molar area with a bone crest height from 5 to 8 mm will be recruited for this trial. Patients will be randomized to either the test (5-mm implant) or control group (10-mm implant) using a computer-generated randomization list . 17 patients will receive a sinus lift procedure, bone graft, and 10 mm implant while the other 17 patients will receive a 5 mm short implant.
Study design
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Short Implant | Other | Device: Zimmer T3 Short Ex Hex With Discrete Crystalline Deposition17 patients will receive a 5 mm short implant. |
| Long Implant | Other | Device: Zimmer T3 with Discrete Crystalline Deposition Ex Hex Parallel Walled implants17 patients will receive a sinus lift procedure, bone graft, and 10 mm implant. |
Who may qualify
- Ages
- 20 to 70 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (7 listed)
- Age 20-70 years at enrollment
- Systemically healthy patients
- Full-mouth plaque score and full-mouth bleeding score ≤ 30% (measured at four sites per tooth)
- In need of one premolar or 1st molar dental implant in the maxillary area
- Neighboring teeth to the planned implant must have natural root(s) or implant supported restoration.
Key exclusion criteria (10 listed)
- Unlikely to be able to comply with study procedures
- Uncontrolled pathologic processes in the oral cavity
- History of head and neck chemotherapy within 5 years prior to surgery
- Systemic or local disease or condition that could compromise post-operative healing and/or osseointegration
- Uncontrolled diabetes mellitus HbA1c >8
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 |
|---|---|---|
| Zimmer T3 Short Ex Hex With Discrete Crystalline DepositionPlacement of a short implant | Device | Short Implant |
| Zimmer T3 with Discrete Crystalline Deposition Ex Hex Parallel Walled implantsPlacement of a long implant with sinus lift and bone graft | Device | Long Implant |
Primary outcome
Change in Mesial-distal (M-D) Bone Loss
Time frame: Baseline, surgical visit 1 day, 4 months, 5 months, 12 months, 24 months
Comparing mesial-distal (M-D) bone loss between the two groups. This will be measured in millimeters using standardized radiographs of the implant site at the screening visit, surgical visit, 4 months post-op, 5 months post-op, 12 months post-op, and 24 months post-op visits.
3 secondary outcomes
Survival Rate
Time frame: 5 month post-op, 12 month post-op, and 24 month post-op visits
Number of Sites With Bleeding on Probing
Time frame: 5 month post-op, 12 month post-op, and 24 month post-op visits
Probing Pocket Depth
Time frame: 5 month post-op, 12 month post-op, and 24 month post-op visits
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 6 May 2025.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Background: PubMed 24818208Anitua E, Alkhraist MH, Pinas L, Begona L, Orive G. Implant survival and crestal bone loss around extra-short implants supporting a fixed denture: the effect of crown height space, crown-to-implant ratio, and offset placement of the prosthesis. Int J Oral Maxillofac Implants. 2014 May-Jun;29(3):682-9. doi: 10.11607/jomi.3404.
- Background: PubMed 23656303Anitua E, Pinas L, Orive G. Retrospective study of short and extra-short implants placed in posterior regions: influence of crown-to-implant ratio on marginal bone loss. Clin Implant Dent Relat Res. 2015 Feb;17(1):102-10. doi: 10.1111/cid.12073. Epub 2013 May 8.
- Background: PubMed 22897683Buser D, Janner SF, Wittneben JG, Bragger U, Ramseier CA, Salvi GE. 10-year survival and success rates of 511 titanium implants with a sandblasted and acid-etched surface: a retrospective study in 303 partially edentulous patients. Clin Implant Dent Relat Res. 2012 Dec;14(6):839-51. doi: 10.1111/j.1708-8208.2012.00456.x.
- Background: PubMed 29114333Sargozaie N, Moeintaghavi A, Shojaie H. Comparing the Quality of Life of Patients Requesting Dental Implants Before and After Implant. Open Dent J. 2017 Aug 31;11:485-491. doi: 10.2174/1874210601711010485. eCollection 2017.
- Background: PubMed 28751181Pieri F, Forlivesi C, Caselli E, Corinaldesi G. Short implants (6mm) vs. vertical bone augmentation and standard-length implants (>/=9mm) in atrophic posterior mandibles: a 5-year retrospective study. Int J Oral Maxillofac Surg. 2017 Dec;46(12):1607-1614. doi: 10.1016/j.ijom.2017.07.005. Epub 2017 Jul 24.
- Background: PubMed 26804969Lemos CA, Ferro-Alves ML, Okamoto R, Mendonca MR, Pellizzer EP. Short dental implants versus standard dental implants placed in the posterior jaws: A systematic review and meta-analysis. J Dent. 2016 Apr;47:8-17. doi: 10.1016/j.jdent.2016.01.005. Epub 2016 Jan 19.
- Background: PubMed 24444399Garaicoa-Pazmino C, Suarez-Lopez del Amo F, Monje A, Catena A, Ortega-Oller I, Galindo-Moreno P, Wang HL. Influence of crown/implant ratio on marginal bone loss: a systematic review. J Periodontol. 2014 Sep;85(9):1214-21. doi: 10.1902/jop.2014.130615. Epub 2014 Jan 20.
- Background: PubMed 27295262Fan T, Li Y, Deng WW, Wu T, Zhang W. Short Implants (5 to 8 mm) Versus Longer Implants (>8 mm) with Sinus Lifting in Atrophic Posterior Maxilla: A Meta-Analysis of RCTs. Clin Implant Dent Relat Res. 2017 Feb;19(1):207-215. doi: 10.1111/cid.12432. Epub 2016 Jun 13.
- Background: PubMed 28000281Chappuis V, Araujo MG, Buser D. Clinical relevance of dimensional bone and soft tissue alterations post-extraction in esthetic sites. Periodontol 2000. 2017 Feb;73(1):73-83. doi: 10.1111/prd.12167.
- Background: PubMed 22930834Schneider CA, Rasband WS, Eliceiri KW. NIH Image to ImageJ: 25 years of image analysis. Nat Methods. 2012 Jul;9(7):671-5. doi: 10.1038/nmeth.2089.
- Background: PubMed 17590161Strietzel FP, Reichart PA. Oral rehabilitation using Camlog screw-cylinder implants with a particle-blasted and acid-etched microstructured surface. Results from a prospective study with special consideration of short implants. Clin Oral Implants Res. 2007 Oct;18(5):591-600. doi: 10.1111/j.1600-0501.2007.01375.x. Epub 2007 Jun 21.
- Background: PubMed 22577959Telleman G, Raghoebar GM, Vissink A, Meijer HJ. Impact of platform switching on peri-implant bone remodeling around short implants in the posterior region, 1-year results from a split-mouth clinical trial. Clin Implant Dent Relat Res. 2014 Feb;16(1):70-80. doi: 10.1111/j.1708-8208.2012.00461.x. Epub 2012 May 11.
- Individual participant dataSharing planned: Undecided
Related trials for Bone Loss, Alveolar
Active, not recruiting
L-PRF Block vs Composite Graft for Horizontal Ridge Augmentation
Alveolar Ridge Resorption After Extraction, Alveolar Bone Loss
Not yet recruiting
Effect of Ascorbic Acid-Loaded I-PRF With Partially Demineralized Dentin Graft on Alveolar Ridge Preservation
Alveolar Ridge Preservation Post-Extraction Bone Healing Dental Implant Site Development Tooth Loss, Alveolar Bone Regeneration Following Odontectomy
Not yet recruitingObservational study
Diagnostic Accuracy of Large Language Models for Peri-Implant Marginal Bone Loss on Panoramic Radiographs
Peri-implantitis, Alveolar Bone Loss
Recruiting
Two Bovine Xenografts in Lateral Window Sinus Augmentation With or Without Bone Marrow Blood
Alveolar Bone Loss, Sinus Floor Augmentation
Recruiting
The Application of a Biphasic Calcium Sulfate Graft Material in Sinus Floor Elevation
Alveolar Bone Loss, Edentulism Nos
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. This study is not recruiting at the moment.
Tae-Ju Oh principal investigator
University of Michigan
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Zimmer T3 Short Ex Hex With Discrete Crystalline Deposition and Zimmer T3 with Discrete Crystalline Deposition Ex Hex Parallel Walled implants in people with Bone Loss, Alveolar, run by University of Michigan at 1 site in United States.
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 10 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: finished, as of the sponsor's last update on 6 May 2025. 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 United States. 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?
Yes. Results are posted in the registry (first posted 6 May 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Change in Mesial-distal (M-D) Bone Loss (time frame: Baseline, surgical visit 1 day, 4 months, 5 months, 12 months, 24 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT04144322, which also lists 13 linked publications.
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 6 May 2025.