Periodontal Regeneration, Clinical and Radiographic Results, Modified Minimal Invasive SurgeryNCT03562039
Evaluation of Healing of Intra-bony Defects in Modified Minimal Invasive Surgical Technique
A study testing M-MIST in people with Periodontal Regeneration, Clinical and Radiographic Results, Modified Minimal Invasive Surgery, run by Cairo University at 2 sites in Egypt.
Trial summary
This study is aiming to compare the clinical and radiographic outcomes after complete versus incomplete removal of granulation tissue during modified minimally invasive surgical technique for management of periodontal intrabony defects in patients with chronic periodontitis. Read more about this study
- Who is it for?
- Ages 25 to 55 yearsHealthy volunteers can take part
- Conditions the study is for
- Periodontal Regeneration, Clinical and Radiographic Results, Modified Minimal Invasive Surgery
- What is being tested?
- M-MIST
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 16 participants
- Where
- 2 sitesEgypt
- Study dates
- 15 Apr 2018to 3 Apr 2021
- Phase
- Interventional
- Are there results?
- None posted in the registry
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 25 to 55 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- - systemically healthy patients
- Age range from 25 - 55.
- Patients with moderate to advanced chronic periodontitis with pockets ≥ 5 mm 6-8 weeks after phase I (non-surgical) therapy.
- Vertical 2 or 3 walls Intra-bony defects.
- Perform and maintain good oral hygiene.
- Able to come for the follow up appointment's needed
Who cannot join
- - Smokers.
- Pregnant patients.
- patients with poor oral hygiene.
- Multirooted teeth with furcation involvement.
Trial locations and contacts
2 sites in 1 country.
About this study
Official title: Clinical and Radiographic Evaluation of Intra Bony Defects Following Complete Versus Incomplete Removal of Granulation Tissue in Modified Minimally Invasive Surgical Technique (M-MIST). A Randomized Controlled Clinical Trial.
This study is aiming to compare the clinical and radiographic outcomes after complete versus incomplete removal of granulation tissue during modified minimally invasive surgical technique for management of periodontal intrabony defects in patients with chronic periodontitis.
Read the detailed description
Periodontal surgery has been expanding in the world of dentistry throughout the past years, as new techniques are emerging to treat the different and complex periodontal disorders. Surgical procedures in dentistry have undergone major changes to minimize invasiveness. In addition, novel instruments and materials have been made to suit the evolution of the surgical procedures (Cortellini. 2012).
Teeth with deep pockets associated with deep intra-bony defects are a clinical challenge for periodontists, where periodontal regeneration has been proven to be effective in managing the treatment of one-, two-, and three-wall intra-bony defects (Needleman and Tucker 2012;Needleman. 2015).
Harrel and Rees (1995) were the first to introduce the term minimally invasive surgery (MIS). MIS is used to describe the use of smaller and more precise surgical procedures that are possible by using of magnifying instruments, such as operating microscopes and microsurgical instruments and materials (Cortellini. 2012).
The rationale for the development of minimally invasive surgical technique (MIST) includes: reduction of trauma during the surgery, increase in flap and wound stability, improvement of wound primary closure, reduction of surgical time, and minimization of intra-operative and post-operative patient discomfort (Cortellini. 2007).
With the use of MIST, Cortellini and Tonneti (2009) confirmed blood clot protection with the aspects of wound and blood clot stability and primary wound closure.
An enhancement of MIST, the modified minimally invasive surgical technique (M-MIST), has been introduced by Cortellini in 2009 to further reduce the surgical invasiveness, with three major objectives in mind: (1) minimize the interdental tissue tendency to collapse providing space provision for regeneration, (2) enhance the wound/soft tissue stability and (3) reduce patient morbidity.
Some authors evaluated the use of various regenerative material in MIST and M-MIST e.g. Enamel matrix derivative (Cortellini 2007) PDGF-bb (Cosyn et al. 2012) and collagen enriched bovine derived xeno-graft (Mishra et al., 2013). Cortellini (2011) also, noted that the use of regenerative material is not necessary with M-MIST.
Hung et al, (2012) reported that granulation tissue could contain progenitor stem cells which are very important components needed for periodontal tissue regeneration.
Moreover, Park et al. (2011) assumed that the inflamed granulation tissue could be used to regenerate lost tissues in the same individual in other defective sites according to its regenerative potential.
All the previous data raised an important question about the necessity to remove granulation tissues in periodontal regenerative techniques: Is complete removal of granulation tissue in M-MIST is mandate for treating isolated intra-bony defects for better healing?
- Conditions
- Periodontal Regeneration, Clinical and Radiographic Results, Modified Minimal Invasive Surgery
- Being tested
- M-MIST
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
M-MISTProcedure or surgery
minimal invasive surgical technique without thorough removal of granulation tissue
| Study group | Role | What they receive |
|---|---|---|
| M-MIST (group A) | Experimental | M-MIST(incomplete granulation tissue removal) Receives: Procedure: M-MIST |
| M-MIST (group B) | Active comparator | conventional M-MIST. Receives: Procedure: M-MIST |
What is being measured
The primary outcome is the main question the study is designed to answer.
changes in clinical attachment level
It is the distance from the cement-enamel junction to the depth of the pocket.
Measured: at baseline then 6, 9 and 12 months
Secondary outcomes (5)
changes in pocket probing depth
distance from the depth of the pocket to the gingival margin
Measured: at baseline then at 6, 9 and 12 months
changes in gingival recession
distance of the exposed root surface from the cemento-enamel junction to the gingival margin
Measured: at baseline then at 6, 9 and 12 months
amount of bone fill
difference in bone fill in standardized periapical radiograogh
Measured: at baseline then at 6, 9 and 12 months
patient pain and discomfort
by giving the patient a questionnaire to fill
Measured: at day of the surgery then at 1 , 3 and 7 days post-surgery
patient satisfaction
by giving the patient a questionnaire to fill
Measured: 12 months post-surgery
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted19 Jun 2018
- Study start15 Apr 2018
- Primary completion30 Mar 2021
- Study completion3 Apr 2021
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (8)Papers the sponsor has linked to this study.
- Other trials for Periodontal Regeneration, Clinical and Radiographic Results, Modified Minimal Invasive SurgeryStudies of the same condition, open and under way.
- More trials run by Cairo UniversityThe 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
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind
- Who is masked
- Participant, Investigator, Outcomes assessor
- Enrolment
- 16 participants (actual)
Sponsor and investigators
- Lead sponsor
- Cairo University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Ahmed Ibrahim, Cairo University
- Investigators
- Hani Nahass, Ass.prof., Study director, Cairo University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03562039
- Sponsor's protocol ID
- 125896
- Status last verified
- Mar 2024
- First submitted
- 22 May 2018
- Last updated
- 5 Mar 2024
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes
Publications
Cortellini P, Tonetti MS. Improved wound stability with a modified minimally invasive surgical technique in the regenerative treatment of isolated interdental intrabony defects. J Clin Periodontol. 2009 Feb;36(2):157-63. doi: 10.1111/j.1600-051X.2008.01352.x.
PubMed 19207892Ainamo J, Bay I. Problems and proposals for recording gingivitis and plaque. Int Dent J. 1975 Dec;25(4):229-35.
PubMed 1058834Fickl S, Thalmair T, Kebschull M, Bohm S, Wachtel H. Microsurgical access flap in conjunction with enamel matrix derivative for the treatment of intra-bony defects: a controlled clinical trial. J Clin Periodontol. 2009 Sep;36(9):784-90. doi: 10.1111/j.1600-051X.2009.01451.x. Epub 2009 Jul 14.
PubMed 19614721Ramfjord SP. The Periodontal Disease Index (PDI). J Periodontol. 1967 Nov-Dec;38(6):Suppl:602-10. doi: 10.1902/jop.1967.38.6.602. No abstract available.
PubMed 5237683Bajaj P, Agarwal E, Rao NS, Naik SB, Pradeep AR, Kalra N, Priyanka N, Kumari M. Autologous Platelet-Rich Fibrin in the Treatment of 3-Wall Intrabony Defects in Aggressive Periodontitis: A Randomized Controlled Clinical Trial. J Periodontol. 2017 Nov;88(11):1186-1191. doi: 10.1902/jop.2017.120661. Epub 2017 Aug 18.
PubMed 28820320Patel GK, Gaekwad SS, Gujjari SK, S C VK. Platelet-Rich Fibrin in Regeneration of Intrabony Defects: A Randomized Controlled Trial. J Periodontol. 2017 Nov;88(11):1192-1199. doi: 10.1902/jop.2017.130710. Epub 2017 Aug 18.
PubMed 28820322Harrel SK. 1999. "A Minimally Invasive Surgical Approach for Periodontal Regeneration: Surgical Technique and Observations. J Periodontol 70: 1547-1557." Hung, Tzu-yuan, Hsiang-chun Lin, and Ying-jen Chan. 2012. "Isolating Stromal Stem Cells from Periodontal Granulation Tissues," 1171-80. doi:10.1007/s00784-011-0600-5. J-c, Park, Kim J-m, Jung I-h, Kim Jc, Choi S-h, Cho K-s, Kim C-s Isolation, and Chang-sung Kim. 2011. "Isolation and Characterization of Human Periodontal Ligament ( PDL ) Stem Cells ( PDLSCs ) from the Inflamed PDL Tissue : In Vitro and in Vivo Evaluations" 18: 721-31. doi:10.1111/j.1600-051X.2011.01716.x. Lindhe and Nyman, periodontology Clinical. 1985. "Scaling and Granulation Tissue Removal in Periodontal Therapy *," no. 1983: 374-88. Needleman, I. 2015. "Clinical Concepts for Regenerative Therapy in Intrabony Defects" 68: 282-307.
Cortellini P, Tonetti MS. Clinical and radiographic outcomes of the modified minimally invasive surgical technique with and without regenerative materials: a randomized-controlled trial in intra-bony defects. J Clin Periodontol. 2011 Apr;38(4):365-73. doi: 10.1111/j.1600-051X.2011.01705.x. Epub 2011 Feb 8.
PubMed 21303402
Study at a glance
From the registry record, last updated by the sponsor on 5 Mar 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Clinical and Radiographic Evaluation of Intra Bony Defects Following Complete Versus Incomplete Removal of Granulation Tissue in Modified Minimally Invasive Surgical Technique (M-MIST). A Randomized Controlled Clinical Trial.
- ClinicalTrials.gov ID
- NCT03562039
- Acronym / sponsor ID
- 125896
- Conditions
- Periodontal Regeneration, Clinical and Radiographic Results, Modified Minimal Invasive Surgery
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 16 participants (actual)
- Lead sponsor
- Cairo UniversityUniversity, hospital or other
- Study start
- 15 Apr 2018 (actual)
- Primary completion
- 30 Mar 2021 (actual)
- Study completion
- 3 Apr 2021 (actual)
- First posted
- 19 Jun 2018 (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 study is aiming to compare the clinical and radiographic outcomes after complete versus incomplete removal of granulation tissue during modified minimally invasive surgical technique for management of periodontal intrabony defects in patients with chronic periodontitis.
Detailed description
Periodontal surgery has been expanding in the world of dentistry throughout the past years, as new techniques are emerging to treat the different and complex periodontal disorders. Surgical procedures in dentistry have undergone major changes to minimize invasiveness. In addition, novel instruments and materials have been made to suit the evolution of the surgical procedures (Cortellini. 2012).
Teeth with deep pockets associated with deep intra-bony defects are a clinical challenge for periodontists, where periodontal regeneration has been proven to be effective in managing the treatment of one-, two-, and three-wall intra-bony defects (Needleman and Tucker 2012;Needleman. 2015).
Harrel and Rees (1995) were the first to introduce the term minimally invasive surgery (MIS). MIS is used to describe the use of smaller and more precise surgical procedures that are possible by using of magnifying instruments, such as operating microscopes and microsurgical instruments and materials (Cortellini. 2012).
The rationale for the development of minimally invasive surgical technique (MIST) includes: reduction of trauma during the surgery, increase in flap and wound stability, improvement of wound primary closure, reduction of surgical time, and minimization of intra-operative and post-operative patient discomfort (Cortellini. 2007).
With the use of MIST, Cortellini and Tonneti (2009) confirmed blood clot protection with the aspects of wound and blood clot stability and primary wound closure.
An enhancement of MIST, the modified minimally invasive surgical technique (M-MIST), has been introduced by Cortellini in 2009 to further reduce the surgical invasiveness, with three major objectives in mind: (1) minimize the interdental tissue tendency to collapse providing space provision for regeneration, (2) enhance the wound/soft tissue stability and (3) reduce patient morbidity.
Some authors evaluated the use of various regenerative material in MIST and M-MIST e.g. Enamel matrix derivative (Cortellini 2007) PDGF-bb (Cosyn et al. 2012) and collagen enriched bovine derived xeno-graft (Mishra et al., 2013). Cortellini (2011) also, noted that the use of regenerative material is not necessary with M-MIST.
Hung et al, (2012) reported that granulation tissue could contain progenitor stem cells which are very important components needed for periodontal tissue regeneration.
Moreover, Park et al. (2011) assumed that the inflamed granulation tissue could be used to regenerate lost tissues in the same individual in other defective sites according to its regenerative potential.
All the previous data raised an important question about the necessity to remove granulation tissues in periodontal regenerative techniques: Is complete removal of granulation tissue in M-MIST is mandate for treating isolated intra-bony defects for better healing?
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind (participant, investigator, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| M-MIST (group A) | Experimental | Procedure: M-MISTM-MIST(incomplete granulation tissue removal) |
| M-MIST (group B) | Active comparator | Procedure: M-MISTconventional M-MIST. |
Who may qualify
- Ages
- 25 to 55 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (6 listed)
- - systemically healthy patients
- Age range from 25 - 55.
- Patients with moderate to advanced chronic periodontitis with pockets ≥ 5 mm 6-8 weeks after phase I (non-surgical) therapy.
- Vertical 2 or 3 walls Intra-bony defects.
- Perform and maintain good oral hygiene.
Key exclusion criteria (4 listed)
- - Smokers.
- Pregnant patients.
- patients with poor oral hygiene.
- Multirooted teeth with furcation involvement.
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 |
|---|---|---|
| M-MISTminimal invasive surgical technique without thorough removal of granulation tissue | Procedure or surgery | M-MIST (group A), M-MIST (group B) |
Primary outcome
changes in clinical attachment level
Time frame: at baseline then 6, 9 and 12 months
It is the distance from the cement-enamel junction to the depth of the pocket.
5 secondary outcomes
changes in pocket probing depth
Time frame: at baseline then at 6, 9 and 12 months
changes in gingival recession
Time frame: at baseline then at 6, 9 and 12 months
amount of bone fill
Time frame: at baseline then at 6, 9 and 12 months
patient pain and discomfort
Time frame: at day of the surgery then at 1 , 3 and 7 days post-surgery
patient satisfaction
Time frame: 12 months post-surgery
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 5 Mar 2024.
- Background: PubMed 19207892Cortellini P, Tonetti MS. Improved wound stability with a modified minimally invasive surgical technique in the regenerative treatment of isolated interdental intrabony defects. J Clin Periodontol. 2009 Feb;36(2):157-63. doi: 10.1111/j.1600-051X.2008.01352.x.
- Background: PubMed 1058834Ainamo J, Bay I. Problems and proposals for recording gingivitis and plaque. Int Dent J. 1975 Dec;25(4):229-35.
- Background: PubMed 19614721Fickl S, Thalmair T, Kebschull M, Bohm S, Wachtel H. Microsurgical access flap in conjunction with enamel matrix derivative for the treatment of intra-bony defects: a controlled clinical trial. J Clin Periodontol. 2009 Sep;36(9):784-90. doi: 10.1111/j.1600-051X.2009.01451.x. Epub 2009 Jul 14.
- Background: PubMed 5237683Ramfjord SP. The Periodontal Disease Index (PDI). J Periodontol. 1967 Nov-Dec;38(6):Suppl:602-10. doi: 10.1902/jop.1967.38.6.602. No abstract available.
- Background: PubMed 28820320Bajaj P, Agarwal E, Rao NS, Naik SB, Pradeep AR, Kalra N, Priyanka N, Kumari M. Autologous Platelet-Rich Fibrin in the Treatment of 3-Wall Intrabony Defects in Aggressive Periodontitis: A Randomized Controlled Clinical Trial. J Periodontol. 2017 Nov;88(11):1186-1191. doi: 10.1902/jop.2017.120661. Epub 2017 Aug 18.
- Background: PubMed 28820322Patel GK, Gaekwad SS, Gujjari SK, S C VK. Platelet-Rich Fibrin in Regeneration of Intrabony Defects: A Randomized Controlled Trial. J Periodontol. 2017 Nov;88(11):1192-1199. doi: 10.1902/jop.2017.130710. Epub 2017 Aug 18.
- BackgroundHarrel SK. 1999. "A Minimally Invasive Surgical Approach for Periodontal Regeneration: Surgical Technique and Observations. J Periodontol 70: 1547-1557." Hung, Tzu-yuan, Hsiang-chun Lin, and Ying-jen Chan. 2012. "Isolating Stromal Stem Cells from Periodontal Granulation Tissues," 1171-80. doi:10.1007/s00784-011-0600-5. J-c, Park, Kim J-m, Jung I-h, Kim Jc, Choi S-h, Cho K-s, Kim C-s Isolation, and Chang-sung Kim. 2011. "Isolation and Characterization of Human Periodontal Ligament ( PDL ) Stem Cells ( PDLSCs ) from the Inflamed PDL Tissue : In Vitro and in Vivo Evaluations" 18: 721-31. doi:10.1111/j.1600-051X.2011.01716.x. Lindhe and Nyman, periodontology Clinical. 1985. "Scaling and Granulation Tissue Removal in Periodontal Therapy *," no. 1983: 374-88. Needleman, I. 2015. "Clinical Concepts for Regenerative Therapy in Intrabony Defects" 68: 282-307.
- Results publication: PubMed 21303402Cortellini P, Tonetti MS. Clinical and radiographic outcomes of the modified minimally invasive surgical technique with and without regenerative materials: a randomized-controlled trial in intra-bony defects. J Clin Periodontol. 2011 Apr;38(4):365-73. doi: 10.1111/j.1600-051X.2011.01705.x. Epub 2011 Feb 8.
- Individual participant dataSharing planned: Yes
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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. This study is not recruiting at the moment.
Hani Nahass, Ass.prof. study director
Cairo University
2 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing M-MIST in people with Periodontal Regeneration, Clinical and Radiographic Results, Modified Minimal Invasive Surgery, run by Cairo University at 2 sites in Egypt.
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 6 inclusion and 4 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 5 Mar 2024. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 2 sites in Egypt. 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?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
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?
changes in clinical attachment level (time frame: at baseline then 6, 9 and 12 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 NCT03562039, which also lists 8 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 5 Mar 2024; AzTrials last refreshed its copy on 7 Nov 2026.