RT Journal Article
T1 Early marginal bone loss around dental implants to define success in implant dentistry: A retrospective study.
A1 Galindo-Moreno, Pablo
A1 Catena, Andrés
A1 Pérez-Sayáns, Mario
A1 Fernández-Barbero, Juan Emilio
A1 O'Valle, Francisco
A1 Padial-Molina, Miguel
K1 alveolar bone loss
K1 dental implants
K1 marginal bone loss
K1 peri-implantitis
K1 periodontitis
K1 prosthetics
AB The aim of this study was to establish an objective criterion in terms of marginal bone level (MBL) to know the prognosis of an implant. A group of 176 patients in whom 590 implants were placed were included in this retrospective study. Patients older than 18 years, presenting either Kennedy class I or II edentulous section, or totally edentulous at least in one of the dental arches were included in this study. Those with any type of disturbance able to alter bone metabolism or with nontreated periodontal disease were excluded. Data on radiographic MBL at loading, 6 and 18 months later, age, gender, smoking habits, history of periodontitis, bone substratum, implant, and prosthetic features were recorded. Nonparametric receiver operating curves (ROC) were constructed for the MBL at 18 months in order to establish a distinction among high bone loser (HBL) and low bone loser (LBL) implants. Differences as a function of main variables were also determined, particularly abutment height and periodontal disease. HBL implants lost at least 0.48 mm of MBL 6 months after loading; they reached at least 2 mm of MBL 18 months after loading. MBL rate followed a nonlinear trend, except in implants restored over long prosthetic abutments and in patients with history of severe periodontitis; in whom the rate of MBL over the time was nearly zero. Implants that lose more than 0.5 mm of marginal bone 6 months after loading are at great risk of not being radiographically successful anymore. Therefore, 0.5 mm of MBL is proposed as a distinctive and objective criterion of success in Implant Dentistry within a 6-month follow-up period. A prosthetic abutment height ≥2 mm resulted the most protective factor in the peri-implant bone maintenance.
YR 2022
FD 2022-07-13
LK http://hdl.handle.net/10668/19928
UL http://hdl.handle.net/10668/19928
LA en
DS RISalud
RD Apr 17, 2025