Medicine · 2026
Management of a partially ankylosed mandibular canine using controlled luxation, serial intraoral scan superimposition, and a customized lingual bracket: A case report.
СтатьяКлинический случайНазвание и аннотация: Перевод в очереди
Обработка статьи · этапы, ошибки и управление
Загрузка состояния…
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
Nguyen Viet Anh, Pham Thi Hanh, Joda Tim, Mai Hang Nga, Hoang Viet, Marya Anand
Аннотация
RATIONALE: Tooth ankylosis is difficult to diagnose and monitor because clinical signs are nonspecific, and radiographs provide only static information.
PATIENT CONCERNS: An adult female was referred after prolonged orthodontic failure involving a nonresponsive mandibular left canine, severe anterior open bite, negative overjet, lower midline deviation, and repeated debonding of a stock lingual bracket.
DIAGNOSES: The patient was diagnosed with partial ankylosis of the mandibular left canine, likely related to previous segmental osteotomy and fixation-screw proximity, together with a dental Class III relationship on a skeletal Class II base.
INTERVENTIONS: Controlled luxation was performed, followed by stiff rectangular mechanics, miniscrew-anchored mandibular distalization, and serial intraoral scan superimposition. After repeated bracket failure, a scan-guided customized lingual bracket pad was fabricated and bonded.
OUTCOMES: After just over 5 months, the canine was derotated, uprighted, and positioned within the arch. Bilateral Class I occlusion, normal overjet and overbite, midline correction, and lower occlusal plane leveling were achieved. The incisor mandibular plane angle decreased from 122.5° to 104.4°. Electric pulp testing remained positive, and no additional mandibular incisor root resorption was detected compared with the referral baseline.
LESSONS: Serial intraoral scan superimposition may provide useful radiation-free evidence of post-luxation tooth movement, although registration error and crown-only assessment must be considered. A customized lingual bracket pad can improve bond reliability when heavy mechanics are required.
PATIENT CONCERNS: An adult female was referred after prolonged orthodontic failure involving a nonresponsive mandibular left canine, severe anterior open bite, negative overjet, lower midline deviation, and repeated debonding of a stock lingual bracket.
DIAGNOSES: The patient was diagnosed with partial ankylosis of the mandibular left canine, likely related to previous segmental osteotomy and fixation-screw proximity, together with a dental Class III relationship on a skeletal Class II base.
INTERVENTIONS: Controlled luxation was performed, followed by stiff rectangular mechanics, miniscrew-anchored mandibular distalization, and serial intraoral scan superimposition. After repeated bracket failure, a scan-guided customized lingual bracket pad was fabricated and bonded.
OUTCOMES: After just over 5 months, the canine was derotated, uprighted, and positioned within the arch. Bilateral Class I occlusion, normal overjet and overbite, midline correction, and lower occlusal plane leveling were achieved. The incisor mandibular plane angle decreased from 122.5° to 104.4°. Electric pulp testing remained positive, and no additional mandibular incisor root resorption was detected compared with the referral baseline.
LESSONS: Serial intraoral scan superimposition may provide useful radiation-free evidence of post-luxation tooth movement, although registration error and crown-only assessment must be considered. A customized lingual bracket pad can improve bond reliability when heavy mechanics are required.