Assessment of Bone Thickness in Maxillary Bone After Tooth Movement; Using CBCT Technology

Abstract

Objective: To determine the changes of the alveolar bone level following intrusion and extrusion orthodontic movement of mandibular incisors.

Material and methods: A total of twenty patients were split into two groups: (I) the extrusion group and (II) the intrusion group. CBCT observations were taken both before and after therapy, and Mimics software was used to quantify the alveolar bone level in each aspect of the mandibular incisors. The acquired data were examined statistically.

Findings: Relative to the mandibular central incisors in group (I), the mandibular lateral incisors displayed a higher amount of alveolar bone loss that was statistically non-significant (P >0.05). Compared to the lingual aspect of the mandibular central incisor (0.70 + 0.13-0.60 + 0.14 correspondingly), the mandibular lateral incisors exhibited a larger and significantly greater loss (P < 0.05). The alveolar bone alterations between the mandibular central and lateral incisors were not statistically significant in cohort (II). When the sum of the sites from groups I and II were compared, it was found that group I had a significantly smaller loss (P < 0.05) in the mesial portion of the central incisors than the intrusion group (1.26 + 0.29-1.12 + 0.12, correspondingly), whereas group II had a significantly larger loss (P < 0.05) in the buccal and lingual side of the central incisors. The distal side of the extrusion category experienced a considerably larger reduction in the alveolar bone level of its lower lateral incisors compared to the intrusion cohort.

Conclusions: In comparison with mandibular central incisors, mandibular lateral incisors displayed more bone loss in the lower lateral incisor, especially in the lingual aspect. Accelerated bone loss in group II's mandibular central incisors' buccal and lingual regions.