View related articles View Crossmark data Citing articles: 1 View citing articles ARTICLE; MEDICAL BIOTECHNOLOGY CBCT images: an important tool in the analysis of anatomical variations of maxillary sinus related to Underwood septa features
We present some clinical cases of autogenous tooth graft - a modern method in which the extracted teeth are processed into a demineralised dentin matrix (DDM) and are then immediately transplanted into the post-extraction sockets or bone defects.
We included patients with jaw lesions due to chronic inflammatory conditions, cystic formations, or peri-implantitis. After removing the pathological processes and tissues, we performed curettage with an Er-YAG laser and treated the bone structures in the borderline area. Then auto-tooth bone (ATB) graft material was applied. The clinical results showed favourable wound healing and good bone integration of implants. Radiological studies showed stimulation and acceleration of bone regeneration with alveolar crest resorption of graft material of no more than 10%. Histological examination found new bone formation which was induced by the osteo-inductive material.
On the basis of the clinical outcomes and the favourable healing process with a very good bone integration of the DDM, we can recommend this method as an option for bone defect reconstruction. The satisfactory quantity (up to 3 grams per molar) and quality of the demineralised dentin matrix determine a relatively low cost of bone grafting.
Introduction: The advent of Cone Beam Computed Tomography (CBCT) in endodontics has enhanced the diagnosis of periapical radiolucencies and the assessment of endodontically treated teeth.
Aim: The purpose of this study was to assess the prevalence of periapical radiolucencies in a Bulgarian subpopulation and the quality of previous endodontic treatment using CBCT scans.
Materials and methods: This study included 2795 roots from 160 Large FOV CBCT which were evaluated by two independent examiners using two scoring systems: CBCT-PAI and PESS.
Results: The inter-examiner agreement spanned from strong to almost perfect (0.892 and 0.983). The prevalence of periapical lesions according to the two scoring systems was 23.1% and 12.9 %, respectively. The prevalence of endodontically treated teeth was high (34.1%). Sixty-five percent of them presented with signs of periapical radiolucencies, while only 1.4% of all non-treated roots had a periapical lesion. A significant association between periapical disease, poor quality of the root canal filling and inadequate coronal seal was found (p<0.001).
Conclusions: The prevalence of periapical disease in endodontically-treated teeth in the Bulgarian subpopulation was high. Poor qual-ity of the root canal filling and inadequate coronal seal were assessed as prognostic determinants of treatment failure. CBCT techniques can augment conventional diagnostic techniques in the field of endodontics.
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