Osseodensification effect on implants primary and secondary stability: Multicenter controlled clinical trial

Author(s)

Bergamo, Edmara T. P. ^[1] ; Zahoui, Abbas ^[1] ; Barrera, Raul Bravo ^[2] ; Huwais, Salah ^[3] ; Coelho, Paulo G. ^{[4, 5, 6]} ; Karateew, Edward Dwayne ^[3] ; Bonfante, Estevam A. ^[1]

Affiliation

^[1] Univ Sao Paulo, Bauru Sch Dent, Dept Prosthodont & Periodontol, 9-75 Octavio Pinheiro Brizolla, BR-17012901 Bauru, SP - Brazil

^[2] San Sebastian Univ, Implantol Postgrad Program, Santiago - Chile

^[3] Univ Illinois, Coll Dent, Postgrad Program, Dept Periodontol, Chicago, IL - USA

^[4] NYU, Coll Dent, Dept Biomimet & Biomat, New York, NY - USA

^[5] NYU, Tandon Sch Engn, Dept Biomed Engn, New York, NY - USA

^[6] NYU, Grossman Sch Med, Hansjorg Wyss Dept Plast Surg, New York, NY - USA

• Document type: Journal article
• Source: CLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH; v. 23, n. 3 MAY 2021.
• Web of Science Citations: 0

Abstract

Background Osseodensification (OD) has shown to improve implant stability; however, the influences of implant design, dimensions, and surgical site characteristics are unknown. Purpose To compare the insertion torque (IT) and temporal implant stability quotients (ISQ) of implants placed via OD or subtractive drilling (SD). Materials and Methods This multicenter controlled clinical trial enrolled 56 patients, whom were in need of at least 2 implants (n = 150 implants). Patients were treated with narrow, regular, or wide implants and short, regular, or long implants in the anterior or posterior region of the maxilla or in the posterior region of the mandible. Osteotomies were performed following manufacturers recommendation. IT was recorded with a torque indicator. ISQ was recorded with resonance frequency analysis immediately after surgery, 3 and 6 weeks. Results Data complied as a function of osteotomy indicated significantly higher IT for OD relative to SD. OD outperformed conventional SD for all pairwise comparisons of arches (maxilla and mandible) and areas operated (anterior and posterior), diameters and lengths of the implants, except for short implants. Overall, ISQ data also demonstrated significantly higher values for OD compared to SD regardless of the healing period. Relative to immediate readings, ISQ values significantly decreased at 3 weeks, returning to immediate levels at 6 weeks; however, ISQ values strictly remained above 68 throughout healing time for OD. Data as a function of arch operated and osteotomy, area operated and osteotomy, implant dimensions and osteotomy, also exhibited higher ISQ values for OD relative to SD on pairwise comparisons, except for short implants. Conclusions OD demonstrated higher IT and temporal ISQ values relative to SD, irrespective of arch and area operated as well as implant design and dimension, with an exception for short implants. Future studies should focus on biomechanical parameters and bone level change evaluation after loading. (AU)

• FAPESP's process: 19/08693-1 - Experimental glass-infiltrated alumina-zirconia composites: characterization of microstructure, optical and mechanical properties.
• Grantee: Edmara Tatiely Pedroso Bergamo
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 12/19078-7 - Development and processing of Al2O3-ZrO2 translucent composite for CAD/CAM monolithic prostheses: the effect of aging on biaxial flexural strength
• Grantee: Estevam Augusto Bonfante
• Support Opportunities: Research Grants - Young Investigators Grants