Effect of Surgical Instrumentation Variables on the Osseointegration of Narrow- and Wide-Diameter Short Implants

Author(s)

Witek, Lukasz ^{[1, 2]} ; Parra, Marcelo ^{[3, 4]} ; Tovar, Nick ^{[2, 5, 6]} ; Alifarag, Adham ^{[2, 7]} ; Lopez, Christopher D. ^[8] ; Torroni, Andrea ^[9] ; Bonfante, Estevam A. ^[10] ; Coelho, Paulo G. ^{[2, 9, 11]}

Affiliation:Show less -

^[1] NYU, Tandon Sch Engn, Dept Biomed Engn, Brooklyn, NY - USA

^[2] NYU, Coll Dent, Dept Biomat & Biomimet, 433 1st Ave, Room 842, New York, NY 10010 - USA

^[3] Univ La Frontera, Fac Med, PhD Program Morphol Sci, Temuco - Chile

^[4] Univ La Frontera, Fac Dent, Temuco - Chile

^[5] NYU, Langone Med Ctr, Dept Oral & Maxillofacial Surg, New York, NY - USA

^[6] Bellevue Hosp Ctr, New York, NY 10016 - USA

^[7] Temple Univ, Lewis Katz Sch Med, Philadelphia, PA 19122 - USA

^[8] Johns Hopkins Sch Med, Dept Plast & Reconstruct Surg, Baltimore, MD - USA

^[9] NYU, Hansjorg Wyss Dept Plast Surg, Sch Med, New York, NY - USA

^[10] Univ Sao Paulo, Bauru Sch Dent, Dept Prosthodont & Periodontol, Bauru, SP - Brazil

^[11] NYU, Tandon Sch Engn, Dept Mech Engn, Brooklyn, NY - USA

• Document type: Journal article
• Source: JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY; v. 79, n. 2, p. 346-355, FEB 2021.
• Web of Science Citations: 0

Abstract

Purpose: The aim of the present study was to systematically analyze how a multifactorial surgical instrumentation approach affects osseointegration on both narrow-diameter and wide-diameter short implants. Materials and Methods: Twelve skeletally mature female sheep were used in the study along with 144 plateau-root-form healing chamber titanium (Ti-6Al-4V) implants (Bicon LLC, Boston, MA), evenly distributed between narrow (3.5 mm) and wide (6.0 mm) diameters. The presence or the absence of irrigation, different drilling speeds, and 2 time points quantifying bone-implant contact (BIC) and bone area fraction occupancy (BAFO) to evaluate the osteogenic parameters around the implants. Results: There were no signs of inflammation, infection, or failure of the implants observed at either healing period. The narrow 3.5-mm implant, at 6 weeks, yielded significant differences in terms of BIC at a drilling speed of 50 rotations per minute (RPM), with higher values of the samples using irrigation (30.6 +/- 6.1%) compared with those without (19.7 +/- 6.1%). No statistical differences were detected for 500 and 1,000 RPM with or without irrigation. The wide 6-mm diameter implant showed differences with respect to drilling speed, 500 and 1,000 RPM, with higher values associated with samples subjected to irrigation. BAFO results, for both diameters, only detected statistical differences between the 2 times (3 vs 6 weeks); no statistical differences were detected when evaluating as a function of time, drilling speed, and irrigation. Conclusions: Surgical instrumentation variables (ie, drilling speed {[}RPM] and irrigation) yielded to be more of an effect for BIC at longer healing time (6 weeks) for the wider implants. Furthermore, deploying narrow or wide plateau-root-form implants, where conditions allow, has shown to be a safe alternative, considering the high BIC and BAFO values observed, independent of irrigation. (C) 2020 American Association of Oral and Maxillofacial Surgeons (AU)

• 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