Dimensional Changes in Single Crowns Supported by Short Transmucosal Implants With Diverging or Converging Neck Profiles in the Esthetic Zone

Edentulous Alveolar Ridge Clinical Trial

Official title:

Long-term Dimensional Changes in Single Crowns Supported by Short (6 mm) Transmucosal Implants With Divergent or Convergent Neck Profiles in the Esthetic Zone. A Randomized Randomized Controlled Clinical Trial

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT06006156
• Other study ID #: UNT_short implants
• Status: Recruiting
• Phase: N/A
• Start date: April 1, 2023
• Est. completion date: December 30, 2026

Study information

• Verified date: December 2023
• Source: ARDEC Academy
• Contact: Daniele Botticelli, PhD
• Phone: +393339070450
• Email: daniele.botticelli[@]gmail.com
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The goal of the present randomized clinical trial is to assess the long-term osseous and peri-implant soft tissue changes as well as the success rate of short implants (6 mm) with a converging collar with micro threads or a diverging polished collar placed in the esthetic zone of the maxilla on partially edentulous patients. The main questions it aims to answer are:

• 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.

Description:

The objectives of the present randomized clinical trial are to evaluate the clinical and radiographic changes over time of hard and soft tissues around implants with a convergent or divergent collar. Twenty volunteer participants with two edentulous regions in the maxillary esthetic zone (from the right second premolar to the left second premolar) will be included in the study. Two implants will be randomly installed, one with a convergent collar and one with a divergent collar. After 3 months of healing, individual crowns will be installed. At each visit the following parameters will be evaluated: plaque index, probing depth, bleeding on probing, the recession of the mucosal margin, intraoral radiographs, likewise control CBCT, and impressions will be performed. The visit will take place at 6 and 12 months and then annually for a minimum of 3 years. Changes at the level of the marginal bone will be assessed overtime on the radiographs. Dimensional changes will be clinically evaluated during control evaluations and later through digital impressions.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 20
• Est. completion date: December 30, 2026
• Est. primary completion date: December 30, 2023
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 21 Years to 60 Years

Eligibility

Inclusion Criteria:

• Presence of at least two edentulous areas in the esthetic region of the maxilla (from right to left from second premolar to premolar, preferably first premolars and incisors)

• 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:

• The presence of any uncontrolled systemic disease.

• History of past or ongoing chemotherapeutic or radiotherapeutic treatments.

• Heavy smokers (>10 cigarettes per day).

• Previous bone regeneration procedures in the area of interest

Related Conditions & MeSH terms

• Edentulous Alveolar Ridge
• Mouth, Edentulous

Intervention

Procedure:
• Dental implants placement
surgery for placement of two one-piece trans gingival implants

Locations

Country	Name	City	State
Peru	Universidad Nacional de Trujillo	Trujillo	La Libertad

Sponsors (2)

Lead Sponsor	Collaborator
ARDEC Academy	Universidad Nacional de Trujillo

Country where clinical trial is conducted

Peru, 

References & Publications (17)

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. — View Citation

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.a — View Citation

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 Re — View Citation

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. — View Citation

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. — View Citation

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. — View Citation

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.201 — View Citation

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. d — View Citation

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( — View Citation

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, — View Citation

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 Per — View Citation

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):458-6 — View Citation

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 — View Citation

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. — View Citation

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. — View Citation

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):6

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. — View Citation

* Note: There are 17 references in all — Click here to view all references

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	height of the periimplant bone tissues	The height of the periimplant bone tissues will be evaluated in the intraoral radiographic images, cone beam tomography, and the three-dimensional images obtained from the digital prints	baseline
Primary	height of the periimplant bone tissues	The height of the periimplant bone tissues will be evaluated in the intraoral radiographic images, cone beam tomography, and the three-dimensional images obtained from the digital prints	3 years follow up
Primary	height of the periimplant soft tissues	The height of the periimplant soft tissues will be evaluated in the intraoral radiographic images, cone beam tomography, and the three-dimensional images obtained from the digital prints	Baseline
Primary	height of the periimplant soft tissues	The height of the periimplant soft tissues will be evaluated in the intraoral radiographic images, cone beam tomography, and the three-dimensional images obtained from the digital prints	3 years follow up
Secondary	Plaque index	to score the plaque accumulation of plaque around implants will be used the Mombelli et al index	1 year
Secondary	Plaque index	to score the plaque accumulation of plaque around implants will be used the Mombelli et al index	3 year
Secondary	Bleeding on probing	During the probing, the bleeding on probing will be registered in the periodontal record.	1 year
Secondary	Bleeding on probing	During the probing, the bleeding on probing will be registered in the periodontal record.	3 year
Secondary	Probing depth	A calibrated probe will be used to measure the probing depth in all teeth annually.	1 year
Secondary	Probing depth	A calibrated probe will be used to measure the probing depth in all teeth annually.	3 year
Secondary	Implant success rate	The criteria to evaluate the success rate will be if there was no persistent and/or irreversible signs or symptoms such as pain, infection, neuropathies, or paresthesia, no peri-implant infection with suppuration, no mobility, and no continuous radiolucency around the implant.	1 year
Secondary	Implant success rate	The criteria to evaluate the success rate will be if there was no persistent and/or irreversible signs or symptoms such as pain, infection, neuropathies, or paresthesia, no peri-implant infection with suppuration, no mobility, and no continuous radiolucency around the implant.	3 years