A six-site method for the evaluation of periodontal bone loss in cone-beam CT images

Abstract

Objectives: In contrast to two-dimensional planar images, a measuring point is hardly repeatedly determined in a CBCT image when alveolar bone loss is assessed. Thus, the aim of the present study was to propose a six-site measuring method, which is closely related to anatomical structure, for the evaluation of alveolar bone loss in CBCT images. Methods: 150 measuring points in 11 molars and 14 premolars from 6 patients (2 males and 4 females) were included. CBCT images of the teeth were acquired prior to periodontal surgery. Four observers measured the distances between cemento-enamel junctions and the apical bases of the periodontal bone defect at the mesio-buccal, mid-buccal, disto-buccal, mesio-lingual/palatal, mid-lingual/palatal and disto-lingual/palatal sites in CBCT images. Direct measurements of the six sites were correspondingly obtained in the subsequent periodontal surgeries. Differences between the distances measured in the CBCT images and during the surgery were analysed. Interobserver and intraobserver variances were tested. Results: No statistically significant difference was found between the surgical and CBCT measurements (p 5 0.84). Diagnostic coincidence rates of four observers were 86.7%, 87.3%, 88.7% and 88.0%, respectively. The interobserver (p 5 0.95) and intraobserver (p 5 0.30) variances were not significant. Conclusions: The six-site measuring method validated in the present study may be a useful three-dimensional measuring method for the evaluation of periodontal disease.

When Is Cone‐Beam Computed Tomography Imaging Appropriate for Diagnostic Inquiry in the Management of Inflammatory Periodontitis? An American Academy of Periodontology Best Evidence Review

“…Three additional studies have used CBCT images to measure either vertical or horizontal bone loss around periodontally compromised teeth and compared that result to the direct surgical measurements 13,35,36 . All three studies confirmed accuracy of CBCT images in detecting either vertical or horizontal bone loss around posterior teeth.…”

“…In total, twelve articles were included in the present systematic review 13‐15 , 21,22 , 35‐41 . Six of the included studies assessed the accuracy of CBCT for detection of ABL (Tables 1 and 2), 13‐15,35‐37 and the other six studies evaluated application of CBCT for diagnosis of furcation involvement 42 (Tables 3 and 4). 21,22,38‐41 …”

“…Intrabony and furcation defects were the two most commonly discussed bony defects when comparing the efficacy of CBCT versus IRs. A total of 12 references met our inclusion criteria to determine the role of CBCT in diagnosis and treatment of both intrabony and furcation defects 13‐15,21,22,35‐41 …”

“…Guo et al used a six‐site measuring method to investigate the accuracy and repeatability of the method for alveolar bone level evaluation in CBCT images for premolars and molars 35 . The distance between the CEJ and the apical base of the periodontal bone defect was measured using a six‐site measuring method for both CBCT images and direct measurements during the periodontal surgery 35 .…”

Tomografia computadorizada no planejamento cirúrgico em Periodontia: revisão de literatura

“…Guo et al 19 propuseram um método de medição de seis pontos para a avaliação da perda óssea alveolar em imagens de TCFC. Cento e cinquenta pontos de medição em 11 molares e 14 pré-molares de seis pacientes foram incluídos.…”