What question did this study set out to answer?

To evaluate long-term positional and angulation changes of developing mandibular third molars following non-extraction total arch distalization in adolescents using CBCT.

May 4, 2022Applied SciencesOpen Access

Long-Term CBCT Evaluation of Mandibular Third Molar Changes after Distalization in Adolescents

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To evaluate long-term positional and angulation changes of developing mandibular third molars following non-extraction total arch distalization in adolescents using CBCT.
Evaluated 65 mandibular third molars across 35 subjects: a treated cohort (n=14, mean age 12.8 years, 26 third molars) with Class I bimaxillary protrusion receiving modified C-palatal plates and Class III elastics, and an untreated normal-occlusion control group (n=21, 39 third molars).
Obtained CBCT scans in the treated group before distalization (T1), after distalization (T2), and at long-term observation (T3; 6.1 ± 2.7 years), analyzing positional parameters with repeated measures ANOVA and Bonferroni corrections.
Mandibular first and second molar crowns exhibited 2.3 mm and 1.7 mm of distal movement with 5.2° and 5.3° of distal tipping, respectively, alongside 3.0° of distal tipping in third molars.
Treated third molars displayed statistically significant angulation changes compared to controls at long-term follow-up (p < 0.001), shifting into downward and buccal positions.

Authors

HHHyerim HongCornell University NLNam‐Ki LeeSeoul National University Bundang Hospital JPJae Hyun ParkSangmyung University

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Implication

Comparative study observes downward and buccal displacement of mandibular third molars in adolescents after arch distalization, highlighting an elevated risk of wisdom tooth impaction.

Cite This Study

Hong et al. (2022) studied this question.

synapsesocial.com/papers/6a005807b124fe581985d7f0 https://doi.org/10.3390/app12094613

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Implication

Comparative study observes downward and buccal displacement of mandibular third molars in adolescents after arch distalization, highlighting an elevated risk of wisdom tooth impaction.

Long-Term CBCT Evaluation of Mandibular Third Molar Changes after Distalization in Adolescents

Key Points

Discussion

Implication

Cite This Study

Long-Term CBCT Evaluation of Mandibular Third Molar Changes after Distalization in Adolescents

Key Points

Discussion

Implication

Cite This Study