Pixel gray measurement for the diagnosis of dental ankylosis in cone beam computed tomography images.
Oral Surg Oral Med Oral Pathol Oral Radiol
; 131(6): 721-729, 2021 Jun.
Article
en En
| MEDLINE
| ID: mdl-32994089
ABSTRACT
OBJECTIVE:
The aim of this study was to investigate dental ankylosis in unerupted or partially erupted teeth by using cone beam computed tomography (CBCT) to quantify pixel intensity. STUDYDESIGN:
In total, 157 CBCT images from individuals with a total of 206 unerupted or partially erupted teeth with suspected ankylosis were evaluated. CBCT images were analyzed for the presence of ankylosis by 2 oral radiologists by quantifying mean pixel intensities (analysis 1) and variations in pixel intensities (analysis 2) in normal and ankylosed regions. The association between ankylosis and demographic and tooth-related factors was also examined.RESULTS:
Ankylosis was diagnosed in 57 teeth (27.7%). The diagnosis was established with all 3 multiplanar reconstruction views in 22 of these teeth (38.6%). In analysis 1, a higher pixel intensity was observed in areas with ankylosis compared with normal periodontal ligament (PDL) density as a result of bone deposition in this region, which is characteristic of ankylosis (P < .001). In analysis 2, reductions in pixel intensity were greater in the PDL areas than in the ankylosed areas. Ankylosis was significantly associated with the anterior teeth, the maxillary arch, single-rooted teeth, and impacted teeth (P ≤ .026).CONCLUSIONS:
Our results suggest that CBCT measurement of pixel intensity may be useful for the diagnosis of ankylosis.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Diente
/
Diente Impactado
/
Anquilosis del Diente
Tipo de estudio:
Diagnostic_studies
Límite:
Humans
Idioma:
En
Revista:
Oral Surg Oral Med Oral Pathol Oral Radiol
Año:
2021
Tipo del documento:
Article
País de afiliación:
Brasil