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KMID : 0361920140440020054
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Korean Journal of Orthodontics
2014 Volume.44 No. 2 p.54 ~ p.61
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Three-dimensional evaluation of maxillary anterior alveolar bone for optimal placement of miniscrew implants
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Choi Jin-Hwan
Yu Hyung-Seog
Lee Kee-Joon
Park Young-Chel
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Abstract
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Objective: This study aimed to propose clinical guidelines for placing miniscrew implants using the results obtained from 3-dimensional analysis of maxillary anterior interdental alveolar bone by cone-beam computed tomography (CBCT).
Methods: By using CBCT data from 52 adult patients (17 men and 35 women; mean age, 27.9 years), alveolar bone were measured in 3 regions: between the maxillary central incisors (U1?U1), between the maxillary central incisor and maxillary lateral incisor (U1?U2), and between the maxillary lateral incisor and the canine (U2?U3). Cortical bone thickness, labio-palatal thickness, and interdental root distance were measured at 4 mm, 6 mm, and 8 mm apical to the interdental cementoenamel junction (ICEJ).
Results: The cortical bone thickness significantly increased from the U1?U1 region to the U2?U3 region (p < 0.05). The labio-palatal thickness was significantly less in the U1?U1 region (p < 0.05), and the interdental root distance was significantly less in the U1?U2 region (p < 0.05).
Conclusions: The results of this study suggest that the interdental root regions U2?U3 and U1?U1 are the best sites for placing miniscrew implants into maxillary anterior alveolar bone.
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KEYWORD
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Cone-beam computed tomography, Upper incisor intrusion, Cortical bone thickness, Gummy smile, Miniscrew implant
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