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Master Thesis

Proposition d'un modèle d'évaluation clinique de sévérité des péri-implantites

Abstract : A study was carried out in the odontology department of the Timone hospital in Marseille (France) with the aim of creating a diagnostic tool allowing an evaluation of the risk of peri-implantitis evolution according to the severity. Forty-three patients, 28 of whom were diagnosed with peri-implantitis on at least one implant and 15 control patients, were included in the study approved by the IHU Ethics Committee. Participants completed a questionnaire, underwent a thorough clinical examination and a systematic retro-alveolar intraoral radiography of the incriminated implant(s). The following criteria were observed: the number of faces of the implant showing bleeding and / or pus on probing, the probing depth on at least two faces of the implant, bone loss as a function of the length of the implant, the number of implant faces with dental plaque, the parameters required for the determination of excess cement (screwed or sealed prosthesis, situation in the gums of the sealed prosthesis), the periodontal status, glycemic status and tobacco use. 16/28 (57.1%) of cases were identified with high peri-implantitis risk compared to only 2/28 (7.2%) of cases with low risk. The remaining 10/28 (35.7%) correspond to patients with moderate peri-implantitis risk. Control patients: 15/15 (100%) had a low risk. In addition, peri-implant pocket samples were taken during the clinical observation to be analyzed by the URMITE (Research Unit on Infectious and Emerging Tropical Diseases) Mediterranean Infection. The aim was to highlight the relative involvement of methanogenic archaea, in particular Methanobrevibacter oralis, in pathogenesis of peri-implantitis, using samples from pathological implants and healthy control teeth. M. oralis and M. massiliense were found in the peri-implant pockets but also in the sulci of the healthy teeth. No correlation was found between the presence and concentration of these methanogens on the one hand, and the level of peri-implant risk provided by the proposed model.
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Master Thesis
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https://dumas.ccsd.cnrs.fr/dumas-01643331
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Submitted on : Tuesday, November 21, 2017 - 12:58:51 PM
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Anthony Mazel. Proposition d'un modèle d'évaluation clinique de sévérité des péri-implantites. Chirurgie. 2017. ⟨dumas-01643331⟩

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