Aim: to evaluate the ridge dimensions of edentulous mandibu- lar posterior sextants by the use of CBCT radiographs. Material and Methods: cone beam computerized tomography (CBCT) scans of totally edentulous mandibles from 136 patients (69 males; mean age: 67.4 years, range 27 @ 92 years) were ret- rospectively included for analysis. At sites corresponding to the second premolar (site a) and the mesial and distal root of first molar (sites b and c, respectively), bone height (BH) was mea- sured as the distance between the alveolar canal and the bone crest, and bucco-lingual bone width (BW) was measured at 1, 3, and 5 mm from the most coronal point of the bone crest. Results: Bone height (BH) decreased from site a (11.2 ` 4.0) to site c (10.3 ` 3.3) (p < 0.001). Males showed a significantly higher BH compared to females at all sites (p < 0.001), the mean difference being 2.79 mm. No significant impact of age on BH was found. BW increased from coronal to apical at all points (BW5 mm > BW3 mm > BW1 mm). At all height levels (1, 3 and 5 mm), BW increased from mesial to distal (BWc > BWb > BWa). No significant impact of age and gender on BW was found. Conclusion: In the posterior sextant of edentulous mandibles, BH decreased from mesial to distal, while BW showed an increase. Gender had a significant impact on BH, with males showing greater BH values compared to females.
Ridge dimensions of the edentulous mandible in posterior sextants: an observational study on cone beam CT analysis
PRAMSTRALLER, Mattia;FARINA, Roberto;
2015
Abstract
Aim: to evaluate the ridge dimensions of edentulous mandibu- lar posterior sextants by the use of CBCT radiographs. Material and Methods: cone beam computerized tomography (CBCT) scans of totally edentulous mandibles from 136 patients (69 males; mean age: 67.4 years, range 27 @ 92 years) were ret- rospectively included for analysis. At sites corresponding to the second premolar (site a) and the mesial and distal root of first molar (sites b and c, respectively), bone height (BH) was mea- sured as the distance between the alveolar canal and the bone crest, and bucco-lingual bone width (BW) was measured at 1, 3, and 5 mm from the most coronal point of the bone crest. Results: Bone height (BH) decreased from site a (11.2 ` 4.0) to site c (10.3 ` 3.3) (p < 0.001). Males showed a significantly higher BH compared to females at all sites (p < 0.001), the mean difference being 2.79 mm. No significant impact of age on BH was found. BW increased from coronal to apical at all points (BW5 mm > BW3 mm > BW1 mm). At all height levels (1, 3 and 5 mm), BW increased from mesial to distal (BWc > BWb > BWa). No significant impact of age and gender on BW was found. Conclusion: In the posterior sextant of edentulous mandibles, BH decreased from mesial to distal, while BW showed an increase. Gender had a significant impact on BH, with males showing greater BH values compared to females.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
