Evaluation Of Bone Mineral Density In Implant Area By CBCT

Objective To evaluate the alveolar bone mineral density(BMD)of the mandibular by cone beam computed tomography(CBCT)combined with Mimics software,which provides a reference for clinical dental implant.Methods A total of 130 patients were enrolled in the Anhui Stomatological Hospital.The maxillary and maxillary bone were scanned by CBCT before operation.The alveolar bone BMD of 205 prospective implant areas was measured by Mimics software.SPSS22.0software and ANOVA analysis and t-test were used for statistical analysis.Results(1)The average BMD of the mandibular implanted area was: mandibular anterior region(885.57±199.34)>maxillary anterior region(717.81±188.34HU)>mandibular posterior region(592.22±186.26HU)>maxillary posterior region(465.26± 171.84HU),the difference in BMD between the four implanted areas was statistically significant(P<0.05).(2)According to Norton's and Gamble's measurements,the range of BMD under different bone classifications was obtained: the mandibular anterior region were mostly bone type ?;the mandibular posterior region and the mandibular posterior region were mostly bone type ?/?;and the maxillary posterior region were mostly bone type ?.(3)The average BMD of males was higher than that of females in four mandibular implant areas,but the difference was not statistically significant(P > 0.05).(4)Longitudinal comparison of average BMD with age in different implant areas showed that the average BMD was the higher in 30-39,40-49 age groups.Conclusion CBCT can objectively evaluate the alveolar bone in the prospective im-plant area,and provide important reference value for preoperative evaluation of cli-nical implant.