A radiological evaluation of alveolar bone regeneration between the left and right mandibles and maxillae of the Chacma baboon

Abstract

There is a lack of information in comparing the healing rate between the left and right sides of the maxilla and mandible. Osteogenesis of alveolar bone was evaluated with digital radiology by comparing differences in bone density (BD) at different time points within the left and right maxilla and mandible. Alveolar bone defects were created in five healthy Chacma baboons. Standardised x-ray images were acquired over time and the densities of the selected trauma areas were measured pre-operatively, post-operatively and at 3 and 6 weeks post-operatively. Differences in densities were statistically tested. There was no significant difference when the grey scale averages of the combined first and fourth quadrants (right side) and combined second and third quadrants (left side) were compared pre-operatively (t = 0.70), immediately post-operatively (t = 0.34), 3 weeks post-operatively (t = 0.40) and 6 weeks post-operatively (t = 0.66). There was also no significant difference between the values for the first and second quadrants (maxilla) pre-operatively (t = 0.37), immediately post-operatively (t = 0.30), 3 weeks post-operatively (t = 0.30) and 6 weeks post-operatively (t = 0.38); the third and fourth quadrants (mandible) were also not significantly different pre-operatively (t = 0.29), immediately post-operatively (t = 0.69), 3 weeks post-operatively (t = 0.07) and 6 weeks post-operatively (t = 0.06). However, the results showed an increased predisposition of the right side to regenerate faster than the left side and indicated sufficient information to investigate the effect of laterality and preferred side of mastication on the rate of healing and alveolar BD in the maxilla and mandible.

Mapping of the recommended and optimal orthodontic implantation sites in the palate by cone-beam computed tomography

“…However, the bone density was slightly greater than that on the left at P6-7. The minor difference between the right and left molar regions could be attributed to the preferred chewing side, which had an in uence on bone density differences 22 . Further, adult males showed a statistical difference (P = 0.017) between the left and right sides near the alveolar ridge section (0°-30°)at P6-7.…”

Periodontal status of anterior teeth following clinical crown lengthening by minimally traumatic controlled surgical extrusion

“…26 Thus, changes in bone radiodensity can be used as an indicator of bone density alteration. Thus, the results are highly accurate.…”

“…15,23 However, in the present study, no significant difference was found in the distance between the biting block and the bone crest at any those in other studies including histological and histomorphometrical measurements, and a correlation was found between the different approaches. 26 Thus, changes in bone radiodensity can be used as an indicator of bone density alteration.…”