Saturday, July 26, 2025
Orthodontic miniscrew anchorage has led to a paradigm shift in orthodontics by reducing unwanted movement of anchoring teeth. The study evaluated root proximity in orthodontic miniscrew implants using CBCT, revealing that 52.4% of miniscrews failed within one month after placement. Chi-square and logistic regression analysis showed a significant correlation between root proximity and miniscrew failure, with 2.1 times higher likelihood in those with root proximity. This study confirms root proximity as a major factor in interradicular miniscrew failure and suggests a novel approach for measuring root proximity in CBCT for predicting failure. Miniscrews, as a widely used TAD, have proven effective for various insertion sites and purposes, with their design and material being well-engineered. The success rate of miniscrews has been consistently stable, with a recent systematic review showing 89.87% in maxilla and 79.24% in mandible. However, their success rate is still relatively low compared to dental implants, necessitating consideration in treatment planning. Clinical studies have investigated factors like root proximity, age, experience, and bone contact, but the measurement was either a distance or a binary classification. The amount of root proximity area was not evaluated in previous studies, and there has been no attempt to assess the relationship between proximity and miniscrew failure.
Reference: Cone-beam computed tomography evaluation of root proximity of miniscrew implant and its correlation with failureLabels: BMC Oral Health
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