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Assessment of mini‐implant displacement using cone beam computed tomography
Author(s) -
Alves Matheus,
Baratieri Carolina,
Nojima Lincoln Issamu
Publication year - 2011
Publication title -
clinical oral implants research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.407
H-Index - 161
eISSN - 1600-0501
pISSN - 0905-7161
DOI - 10.1111/j.1600-0501.2010.02092.x
Subject(s) - cone beam computed tomography , coronal plane , implant , displacement (psychology) , molar , sagittal plane , orthodontics , buccal administration , dentistry , fibrous joint , medicine , materials science , computed tomography , anatomy , surgery , psychology , psychotherapist
Objectives: To assess, through cone beam computed tomography (CBCT), the mini‐implants' stability and behaviour when submitted to orthodontic force during upper molars' intrusion. Material and methods: Forty‐one mini‐implants were divided into two groups: 30 in the buccal and palatal mini‐implants group (BPMI), inserted into buccal and palatal sides, and 11 in the midpalatal mini‐implants group (MPMI), inserted into midpalatal suture. One day after insertion, a 200 gf was applied on the mini‐implants during a 5‐month period. CBCT was performed twice: before force application (CBCT 1) and 5 months later (CBCT 2). For mini‐implant displacement assessment, the distance of mini‐implants' head (HMI) and tail (TMI) to coronal, sagittal and axial planes was measured at CBCT 1 and 2. Results: For the BPMI group, the displacement rate was statistically significant ( P <0.05) in all three dimensions for both the head and the tail. For the MPMI group, the displacement rate was statistically significant ( P <0.05) only in the antero‐posterior (head and tail) and vertical (head) dimensions. Conclusions: Buccal, palatal and midpalatal mini‐implants showed some displacement (mean value ≤0.78) when submitted to force, although they are aimed to provide stable skeletal anchorage. To cite this article:
Alves M Jr, Baratieri C, Nojima LI. Assessment of mini‐implant displacement using cone beam computed tomography.
Clin. Oral Impl. Res . 22 , 2011; 1151–1156.
doi: 10.1111/j.1600‐0501.2010.02092.x