Abstract
Implant stability is relevant for the correct osseointegration and long-term success of dental implant treatments. The aim of this study has been to evaluate the influence of implant dimensions and position on primary and secondary stability of implants placed in maxilla using resonance frequency analysis. Thirty-one healthy patients who underwent dental implant placement were enrolled for the study. A total of 70 OsseoSpeed TX (Astra Tech Implant System—Dentsply Implants; Mölndal, Sweden) implants were placed. All implants have been placed according to a conventional two-stage surgical procedure according to the manufacturer instructions. Bone quality and implant stability quotient were recorded. Mean implant stability quotient (ISQ) at baseline (ISQ1) was statistically significant lower compared to 3-months post-implant placement (ISQ2) (p < 0.05). Initial implant stability was significantly higher with 4 mm diameter implants with respect to 3.5 mm. No differences were observed within maxilla regions. Implant length, diameter and maxillary regions have an influence on primary stability.
Highlights
In the literature many authors have proposed advantageous long-term results for implant-supported single-unit crowns, as well as, implant-supported short-span fixed dental prostheses (FDP) [1,2]
This study has evaluated the influence of implant dimensions on the primary and secondary stability of implants placed in the upper arch
The results of the present study suggest that the implant stability quotient (ISQ) values significantly increase during the three months of follow-up
Summary
In the literature many authors have proposed advantageous long-term results for implant-supported single-unit crowns, as well as, implant-supported short-span fixed dental prostheses (FDP) [1,2]. Implant success depends on tissue biological response and on several other factors such as smoking habit, periodontal status and surgical technique [3,4,5,6]. Primary and secondary stability are determining factors for successful implant osseointegration [7] and the absence of micro-movements is a necessary condition [8,9,10]. The quality and quantity of bone at the recipient site; The surgical technique used in order to place the implant; The macro-/microscopic morphology of the implant [11,12,13,14,15,16]. In the literature it is demonstrated that the implant success depends on the quality and quantity of the bone as most important factors [18,19,20].
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