©2023 by Quintessence Publishing Co, Inc.This study retrospecRvely evaluated the influence of prostheRc features on marginal bone level changes around bone-level implants with an external hex connecRon. A total of 100 paRents with 166 implants and cemented crowns were included. Demographic and clinical data were collected. ProstheRc features were radiographically evaluated, including emergence angle (EA), emergence profile (EP), crown-implant raRo (CIR), and abutment height. Marginal bone levels were measured on intraoral radiographs taken at baseline and a^er at least 1 year. The correlaRon between prostheRc features and marginal bone loss (MBL) was then invesRgated. The mean follow-up Rme was 43.94 months. Implant length varied between 5 and 13 mm. The mean height of the abutments used was 1.55 mm. EA measured an average 30.62 degrees (± 13.20) mesially and 29.45 degrees (± 13.07) distally. The CIR was 0.99 (± 0.26). The mean MBL was 0.19 mm on the mesial side and 0.20 mm on distal side of the implants. Significant posiRve associaRons emerged between MBL and implant length (P < .005) and with EA (P < .05). A convex profile of the crown was shown to be associated with a higher distal MBL (P = .025) compared to concave and str aight profiles.
PROSTHESIS EMERGENCE ANGLE INFLUENCES MARGINAL BONE LEVEL FOR EXTERNAL CONNECTION IMPLANTS: A CROSS-SECTIONAL STUDY
Russo D.;Laino L.;
2023
Abstract
©2023 by Quintessence Publishing Co, Inc.This study retrospecRvely evaluated the influence of prostheRc features on marginal bone level changes around bone-level implants with an external hex connecRon. A total of 100 paRents with 166 implants and cemented crowns were included. Demographic and clinical data were collected. ProstheRc features were radiographically evaluated, including emergence angle (EA), emergence profile (EP), crown-implant raRo (CIR), and abutment height. Marginal bone levels were measured on intraoral radiographs taken at baseline and a^er at least 1 year. The correlaRon between prostheRc features and marginal bone loss (MBL) was then invesRgated. The mean follow-up Rme was 43.94 months. Implant length varied between 5 and 13 mm. The mean height of the abutments used was 1.55 mm. EA measured an average 30.62 degrees (± 13.20) mesially and 29.45 degrees (± 13.07) distally. The CIR was 0.99 (± 0.26). The mean MBL was 0.19 mm on the mesial side and 0.20 mm on distal side of the implants. Significant posiRve associaRons emerged between MBL and implant length (P < .005) and with EA (P < .05). A convex profile of the crown was shown to be associated with a higher distal MBL (P = .025) compared to concave and str aight profiles.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
