The Use of Intraoral Radiographs for Identification of Edentulous Patients Rehabilitated with Implants
Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
The aims of this study were; i) to determine the accuracy by which two intraoral radiographic examinations performed on patients with edentulous mandibles treated with dental implants can be matched. ii) To determine if prosthodontic supra-construction is important for matching. iii) Investigate if there is a difference between oral and maxillofacial radiologists (OMR) and dental practitioners, not specialized in oral and maxillofacial radiology (NOMR), regarding their ability to match. What features of the radiographs the operators used to acquire a match was also investigated.
Intraoral radiographic examinations from 59 patients were used. Examinations from 47 patients performed at installation of the supra-structure and at follow-up examinations were used as “ante-mortem” and “post-mortem” records respectively. Examinations from 12 patients were added to the “post-mortem” records without match. The study was divided into two parts. In part one all ante- and ”post-mortem” records had the supra-structure masked and in part two it was visible. Seven dentists (4 OMR, 3 NOMR) were instructed to specify on what basis each matching was made and grade the confidence on a three-graded scale.
OMR had 93 % and 98 % accuracy in part one and two respectively. NOMR had 64 % and 88 %. Bone anatomy was the most commonly used feature by OMR to obtain a match. For NOMR it was the appearance of the fixtures. OMR reported higher confidence in their ability to match the examinations. This study indicates that OMR can be a valuable resource in identification missions where remnants of implant treated people can be expected.
Place, publisher, year, edition, pages
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:umu:diva-113603OAI: oai:DiVA.org:umu-113603DiVA: diva2:886044
Ahlqvist, JanSjöström, Mats