Abstract
BackgroundThe survival of dental implants has been linked to primary stability. The aim of this study is to analyse the factors that influence the survival of dental implants placed without primary stability.Material and MethodsA cohort study of implants placed without primary stability was carried out between September 2011 and July 2016. All cases with registered information on the patient and surgical intervention were used. Cases that did not have a 12-month follow-up after implant placement were excluded.ResultsOut of 2,400 analysed implants, 92 were placed without primary stability. The absence of primary stability was classified as B in 49 cases, C in 38 cases and D in 5 cases. No statistically significant influence of the patient’s age, primary stability, brand, or implant size in terms of implant survival was established. A tendency towards greater early implant loss was observed in implants whose absence of primary stability was classified as C.ConclusionsPoor primary stability is not statistically significant in the loss of dental implants of the characteristics studied. Any of the factors studied are related with early implant loss as a main factor. Key words:Primary stability, survival, dental implants.
Highlights
Long-term success rates of rehabilitation with dental implants have been extensively documented over the past three decades [1,2,3]
Patients: Patients with dental implants placed, Intervention: Dental implants without primary stability, Comparison: General factors; Biological factors; Implant related factors; Results: Dental implants survival The following inclusion criteria were established: cases of dental implants placed between September 2011 and July 2016, with a minimum follow-up period of 12 months, where the surgical report shows an absence of primary stability
We found similarities with Fu et al, who analysed the relationship between bone type according to Leckholm and Zarb, tactile sensation during drilling according to Misch, primary stability measured with an Osstell® device and bone quality analysis by means of computerized microtomography
Summary
Long-term success rates of rehabilitation with dental implants have been extensively documented over the past three decades [1,2,3]. Primary implant stability is defined as the biomechanical stability upon implant insertion, being influenced by numerous factors, such as: bone quantity and quality, the geometric design of the implant, surgical technique, and insertion torque. In terms of survival and stability, different factors such as bone length, diameter or bone quality have been conventionally analysed, but there are few studies that evaluate the absence of primary stability associated with implant treatment success [6,9,10]. The aim of this study is to analyse the factors that influence the survival of dental implants placed with a lack of primary stability. The aim of this study is to analyse the factors that influence the survival of dental implants placed without primary stability. Any of the factors studied are related with early implant loss as a main factor
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