Luis Gallego1, Alberto Sicilia1, Pelayo Sicilia2, Carmen Mallo1, Susana Cuesta1, Mariano Sanz3. 1. Section of Periodontology, Faculty of Medicine and Health Sciences, University Clinic of Odontology, University of Oviedo, Oviedo, Spain. 2. International University of Cataluña (UIC), Barcelona, Spain. 3. Periodontology, Faculty of Odontology, University Complutense of Madrid, Madrid, Spain.
Abstract
OBJECTIVE: To analyze retrospectively interproximal crestal bone loss (CBL) on external-hex "non-identical" (NI) dental implants with different surface topography, when placed in the same intra-oral location in patients with a history of chronic periodontitis following maintenance care. MATERIAL AND METHODS: The patient population consisted of 206 consecutive patients with a history of chronic periodontitis who underwent implant surgery between 2007 and 2010; 755 NI implants with different implant surfaces were placed at posterior mandibular sites: 72 machined, 145 acid-etched/machined (hybrid), and 538 anodized. Crestal bone loss measurements were carried out analyzing the calibrated digital X-rays taken at 1-year intervals as part of the maintenance program, being the time of this retrospective examination from 1 to 3 years. RESULTS: At 3 years (51 patients), the mean CBL was 1.36/1.35 mm at implant/patient level (range: 0-6 mm). A higher CBL was observed at anodized surface implants, when compared to machined and hybrid implants, being the mean CBL 1.48, 0.96, and 0.77 mm, respectively (p = .005). CBL between 2 and 3.9 mm was found in 10.6% of the implants at 3 years (95% CI: 6%-15%), ≥4 mm in 5% (95% CI: 2%-8%). Anodized surface implants had CBL >2 mm at 2 years of 9% (95% CI: 6%-12%) and at 3 years of 18% (95% CI: 12%-24%), which were 2.5 times higher than hybrid implants with 3.6% (95% CI: 0.8%-4%) and 7.4% (95% CI: 0%-17%), respectively. CONCLUSIONS: A higher CBL was observed in the anodized surface implants group, when compared to the hybrid implants group in patients with a history of chronic periodontitis followed during 1-3 years.
OBJECTIVE: To analyze retrospectively interproximal crestal bone loss (CBL) on external-hex "non-identical" (NI) dental implants with different surface topography, when placed in the same intra-oral location in patients with a history of chronic periodontitis following maintenance care. MATERIAL AND METHODS: The patient population consisted of 206 consecutive patients with a history of chronic periodontitis who underwent implant surgery between 2007 and 2010; 755 NI implants with different implant surfaces were placed at posterior mandibular sites: 72 machined, 145 acid-etched/machined (hybrid), and 538 anodized. Crestal bone loss measurements were carried out analyzing the calibrated digital X-rays taken at 1-year intervals as part of the maintenance program, being the time of this retrospective examination from 1 to 3 years. RESULTS: At 3 years (51 patients), the mean CBL was 1.36/1.35 mm at implant/patient level (range: 0-6 mm). A higher CBL was observed at anodized surface implants, when compared to machined and hybrid implants, being the mean CBL 1.48, 0.96, and 0.77 mm, respectively (p = .005). CBL between 2 and 3.9 mm was found in 10.6% of the implants at 3 years (95% CI: 6%-15%), ≥4 mm in 5% (95% CI: 2%-8%). Anodized surface implants had CBL >2 mm at 2 years of 9% (95% CI: 6%-12%) and at 3 years of 18% (95% CI: 12%-24%), which were 2.5 times higher than hybrid implants with 3.6% (95% CI: 0.8%-4%) and 7.4% (95% CI: 0%-17%), respectively. CONCLUSIONS: A higher CBL was observed in the anodized surface implants group, when compared to the hybrid implants group in patients with a history of chronic periodontitis followed during 1-3 years.
Authors: Maximilian Koch; Maximilian Göltz; Meng Xiangjun; Matthias Karl; Stefan Rosiwal; Andreas Burkovski Journal: J Clin Med Date: 2020-02-09 Impact factor: 4.241