Unfavorable condylar repositioning of the mandible

During initial leveling and aligning of some Class II/1 malocclusions, the condyles may reposition distally, giving a substantial and unfavorable change in 'B' point. This results from a situation where centric occlusion and centric relation are not coincidental at the start of treatment (I ig. 7.37). Roth17 has advocated the early use of an acrylic splint to identify these individuals and establish true mandibular position before commencing treatment.

Fig. 7.37 If centric occlusion and centric relation are not coincidental at the start of treatment, the condyles will normally reposition distally during leveling and aligning. This gives a substantial and unfavorable change in 'B' point position.

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