Влияние удаления премоляров на ВНЧС

healthy_back — 26.10.2025 В старые посты ничего не входит

https://www.facebook.com/groups/extractionorthodonticsreversal/posts/25716463377941422/
Effects of Premolar Extractions on Temporomandibular Joints (TMJ)

1) Artun J., Hollender L.G., Truelove E.L.
Relationship between orthodontic treatment, condylar position, and internal derangement in the temporomandibular joint. Am J Orthod Dentofacial Orthop. 1992;101(1):48–53.
https://pubmed.ncbi.nlm.nih.gov/1731488/
→ Tested whether incisor retraction (via premolar extraction) affects condylar position. Post-treatment tomograms showed posteriorly displaced condyles in extraction cases and a higher frequency of TMJ clicking, suggesting posterior repositioning can contribute to joint strain in some patients.

2) Kundinger K.K., Austin B.P., Christensen L.V., Donegan S.J., Ferguson D.J.
An evaluation of temporomandibular joints and jaw muscles after orthodontic treatment involving premolar extractions.Am J Orthod Dentofacial Orthop. 1991;100(2):110–115.
https://pubmed.ncbi.nlm.nih.gov/1867161/
→ Post-treatment evaluations documented TMJ or muscle tenderness in a subset of extraction patients. Suggested the need for joint monitoring in prolonged or asymmetric retraction mechanics.

3) Londoño A., Assis M., Fornai C., Greven M.
Premolar Extraction Affects Mandibular Kinematics. Eur J Dent. 2023;17(3):756–764.
https://pmc.ncbi.nlm.nih.gov/articles/PMC10569881/
→ Extraction group showed:
• Increased lateral translations during protrusion-retraction and speech.
• Longer condylar trajectories, more rotation.
• ≥ 25 % of cases exhibited altered mandibular kinematics.
• Authors conclude extractions modify mandibular motion which may be a cause of TMD, and hence a reason to avoid premolar extractions.

4) Okeson J.P., de Leeuw R.
Differential diagnosis of temporomandibular disorders and occlusal correlates. Dent Clin North Am. 1995;39(2):261–285.
https://pubmed.ncbi.nlm.nih.gov/7781299/
→ Notes that loss of posterior support or altered guidance increases TMJ loading; recommends screening before retraction or extraction mechanics.

5) Wyatt W.E.
Preventing adverse effects on the temporomandibular joint during orthodontic treatment. Am J Orthod Dentofacial Orthop. 1987;91(6):493–499.
https://pubmed.ncbi.nlm.nih.gov/3473929/
→ Warns that over-retraction and loss of posterior support can destabilize the TMJ; advocates force control and condylar monitoring.

Synthesis
Premolar extractions alter condylar trajectories and can significantly disturb TMJ function.

Оставить комментарий

Популярные посты:

• Архив