Dimensional Changes in Single Crowns Supported by Short Transmucosal Implants With Diverging or Converging Neck Profiles in the Esthetic Zone
NCT ID: NCT06006156
Last Updated: 2025-11-17
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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ACTIVE_NOT_RECRUITING
NA
20 participants
INTERVENTIONAL
2023-04-01
2026-12-30
Brief Summary
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* what are the long-term bone and soft tissue changes around implants with a converging collar with micro threads compared to a diverging polished collar placed in the esthetic zone of the maxilla?
* What is the success rate of implants with a converging collar with micro threads compared to a diverging polished collar placed in the esthetic zone of the maxilla? Dental implants with a converging collar with micro threads or a diverging polished collar will be placed in the esthetic zone of the maxilla of the included participants and the measurements regarding the bone and soft tissue level will be compared.
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Detailed Description
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Conditions
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Study Design
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RANDOMIZED
PARALLEL
TREATMENT
QUADRUPLE
Study Groups
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dental implant with a convergent collar
One implant with a converging collar with micro threads will be installed in each patient according to the site randomization in the esthetic region of the upper jaw (between the second premolars).
Dental implants placement
surgery for placement of two one-piece trans gingival implants
dental implant with a divergent collar
One implant with a diverging polished collar will be installed in each patient according to the site randomization in the esthetic region of the upper jaw ( between the second premolars).
Dental implants placement
surgery for placement of two one-piece trans gingival implants
Interventions
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Dental implants placement
surgery for placement of two one-piece trans gingival implants
Other Intervention Names
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Eligibility Criteria
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Inclusion Criteria
* Alveolar bone ≥ 8 mm in height and ≥ 5 mm in thickness assessed on CBCT.
* Age of ≥ 21 years.
* Need for an implant-supported prosthetic restoration.
* Be in good general health with no contraindications to oral surgical procedures.
* Not be pregnant.
* Patients who agree to participate in the study and sign the informed consent.
Exclusion Criteria
* History of past or ongoing chemotherapeutic or radiotherapeutic treatments.
* Heavy smokers (\>10 cigarettes per day).
* Previous bone regeneration procedures in the area of interest
21 Years
60 Years
ALL
Yes
Sponsors
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Universidad Nacional de Trujillo
UNKNOWN
ARDEC Academy
NETWORK
Responsible Party
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Locations
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Universidad Nacional de Trujillo
Trujillo, La Libertad, Peru
Countries
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References
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Agustin-Panadero R, Martinez-Martinez N, Fernandez-Estevan L, Faus-Lopez J, Sola-Ruiz MF. Influence of Transmucosal Area Morphology on Peri-Implant Bone Loss in Tissue-Level Implants. Int J Oral Maxillofac Implants. 2019 July/August;(34):947-952. doi: 10.11607/jomi.7329. Epub 2019 Feb 15.
Altaib FH, Alqutaibi AY, Al-Fahd A, Eid S. Short dental implant as alternative to long implant with bone augmentation of the atrophic posterior ridge: a systematic review and meta-analysis of RCTs. Quintessence Int. 2019;50(8):636-650. doi: 10.3290/j.qi.a42948.
Bitaraf T, Keshtkar A, Rokn AR, Monzavi A, Geramy A, Hashemi K. Comparing short dental implant and standard dental implant in terms of marginal bone level changes: A systematic review and meta-analysis of randomized controlled trials. Clin Implant Dent Relat Res. 2019 Aug;21(4):796-812. doi: 10.1111/cid.12774. Epub 2019 May 1.
Buser D, Ingimarsson S, Dula K, Lussi A, Hirt HP, Belser UC. Long-term stability of osseointegrated implants in augmented bone: a 5-year prospective study in partially edentulous patients. Int J Periodontics Restorative Dent. 2002 Apr;22(2):109-17.
Caneva M, Lang NP, Calvo Guirado JL, Spriano S, Iezzi G, Botticelli D. Bone healing at bicortically installed implants with different surface configurations. An experimental study in rabbits. Clin Oral Implants Res. 2015 Mar;26(3):293-9. doi: 10.1111/clr.12475. Epub 2014 Sep 15.
Doyle AD, Wang FW, Matsumoto K, Yamada KM. One-dimensional topography underlies three-dimensional fibrillar cell migration. J Cell Biol. 2009 Feb 23;184(4):481-90. doi: 10.1083/jcb.200810041. Epub 2009 Feb 16.
Hermann JS, Jones AA, Bakaeen LG, Buser D, Schoolfield JD, Cochran DL. Influence of a machined collar on crestal bone changes around titanium implants: a histometric study in the canine mandible. J Periodontol. 2011 Sep;82(9):1329-38. doi: 10.1902/jop.2011.090728. Epub 2011 Apr 12.
Papaspyridakos P, De Souza A, Vazouras K, Gholami H, Pagni S, Weber HP. Survival rates of short dental implants (</=6 mm) compared with implants longer than 6 mm in posterior jaw areas: A meta-analysis. Clin Oral Implants Res. 2018 Oct;29 Suppl 16:8-20. doi: 10.1111/clr.13289.
Ravida A, Majzoub J, Alassadi M, Saleh MH, Askar H, Wang HL. Impact of Implant Length on Survival of Rough-Surface Implants in Nonaugmented Posterior Areas: A Systematic Review and Meta-Regression Analysis. Int J Oral Maxillofac Implants. 2019 Nov/Dec;34(6):1359-1369. doi: 10.11607/jomi.7509.
Ravida A, Wang IC, Sammartino G, Barootchi S, Tattan M, Troiano G, Laino L, Marenzi G, Covani U, Wang HL. Prosthetic Rehabilitation of the Posterior Atrophic Maxilla, Short (</=6 mm) or Long (>/=10 mm) Dental Implants? A Systematic Review, Meta-analysis, and Trial Sequential Analysis: Naples Consensus Report Working Group A. Implant Dent. 2019 Dec;28(6):590-602. doi: 10.1097/ID.0000000000000919.
Rodriguez X, Navajas A, Vela X, Fortuno A, Jimenez J, Nevins M. Arrangement of Peri-implant Connective Tissue Fibers Around Platform-Switching Implants with Conical Abutments and Its Relationship to the Underlying Bone: A Human Histologic Study. Int J Periodontics Restorative Dent. 2016 Jul-Aug;36(4):533-40. doi: 10.11607/prd.2580.
Rossi F, Botticelli D, Cesaretti G, De Santis E, Storelli S, Lang NP. Use of short implants (6 mm) in a single-tooth replacement: a 5-year follow-up prospective randomized controlled multicenter clinical study. Clin Oral Implants Res. 2016 Apr;27(4):458-64. doi: 10.1111/clr.12564. Epub 2015 Feb 18.
Rossi F, Lang NP, Ricci E, Ferraioli L, Baldi N, Botticelli D. Long-term follow-up of single crowns supported by short, moderately rough implants-A prospective 10-year cohort study. Clin Oral Implants Res. 2018 Dec;29(12):1212-1219. doi: 10.1111/clr.13386. Epub 2018 Dec 6.
Rossi F, Lang NP, Ricci E, Ferraioli L, Marchetti C, Botticelli D. 6-mm-long implants loaded with fiber-reinforced composite resin-bonded fixed prostheses (FRCRBFDPs). A 5-year prospective study. Clin Oral Implants Res. 2017 Dec;28(12):1478-1483. doi: 10.1111/clr.13015. Epub 2017 Mar 28.
Storelli S, Abba A, Scanferla M, Botticelli D, Romeo E. 6 mm vs 10 mm-long implants in the rehabilitation of posterior jaws: A 10-year follow-up of a randomised controlled trial. Eur J Oral Implantol. 2018;11(3):283-292.
Szathvary I, Caneva M, Caneva M, Bressan E, Botticelli D, Meneghello R. A volumetric 3-D digital analysis of dimensional changes to the alveolar process at implants placed immediately into extraction sockets. J Oral Science Rehabilitation. 2015 Sep;1(1):62-9.
Welander M, Abrahamsson I, Berglundh T. Subcrestal placement of two-part implants. Clin Oral Implants Res. 2009 Mar;20(3):226-31. doi: 10.1111/j.1600-0501.2008.01637.x.
Provided Documents
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Document Type: Study Protocol
Other Identifiers
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UNT_short implants
Identifier Type: -
Identifier Source: org_study_id
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