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Primary stability of narrow‐diameter dental implants with a multiple condensing thread design placed in bone with and without osteotomes: An in vitro study
Author(s) -
Romanos Georgios E.,
Lau Jessica,
DelgadoRuiz Rafael,
Javed Fawad
Publication year - 2020
Publication title -
clinical implant dentistry and related research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.338
H-Index - 85
eISSN - 1708-8208
pISSN - 1523-0899
DOI - 10.1111/cid.12908
Subject(s) - thread (computing) , dentistry , materials science , orthodontics , medicine , engineering , mechanical engineering
Background The authors hypothesized that there is no difference in the primary stability (PS) of multiple condensing thread design (MCTD) implants placed in simulated type‐IV bone with and without using osteotomes. Purpose This in vitro study assessed the PS of narrow‐diameter dental implants with MCTD placed in simulated soft (type‐IV) bone with and without using osteotomes. Materials and Methods Sixty MCT‐designed implants (diameter: 3.0 mm; length: 11.5 mm) were placed using 800 rpm drilling speed in cellular rigid polyurethane foam bone‐blocks that simulated type‐IV bone. Prior to placement, the implants were divided into three groups (20 implants per group) depending upon the protocol used for osteotomy preparation—Group‐1: Conventional drilling (CD); Group‐2: CD followed by osseous condensation using a chisel‐shaped tapered osteotome with maximum diameter of 3 mm; and Group‐3: CD followed by osseous condensation using a cylindrical osteotome with maximum diameter of 3 mm. Abutments were connected to all implants and PS was recorded using resonance frequency analysis (RFA) and the periotest (PTV). Group comparisons were performed using analysis and Bonferroni post‐hoc adjustment tests. Level of significance was set at P < .05. Results There was no statistically significant difference in the RFA values for the MCT‐designed implants placed in groups 1, 2, and 3 (59.85 ± 0.72, 59.67 ± 0.76 and 59.42 ± 0.92, respectively). There was no statistically significant difference in the PTV values for MCT‐designed implants in groups 1, 2, and 3 (1.655 ± 0.82, 1.405 ± 0.57, and 1.078 ± 0.63, respectively). Conclusion The MCTD implants with narrow diameters have a high PS in artificial soft bone in vitro. Due to the condensation effect of the thread design, there is no need for additional condensation of the peri‐osteotomy bone in order to improve implant stability.