Treating an Asymmetric Class II CASE with a Palatal TAD Technique

In this article, I will show an asymmetric Class II case that was treated utilizing a palatal TAD technique. The asymmetry I am describing here means that one side of the dental platform is more Class II than the other. These dental asymmetries can occur due to dental, skeletal or soft tissue considerations. If the cause of the asymmetry is an abnormal dental eruption, early loss of a deciduous tooth or the loss of a permanent tooth then there is a dental etiology. If the cause is skeletal, then the asymmetry is probably acquired. The patient in the case being shown is a 13-year-old male. Skeletally, the following conditions present: the skeleton is Class I; he has a slightly deep skeletal vertical dimension and the growth pattern is normal. Dentally, the bite is slightly deep (Fig. 1C) and he has an asymmetric Class II platform. The right molar and cuspid are almost a full tooth Class II; a 5.5 mm Class II molar discrepancy presents (Fig. 1A). The left molar is very nearly Class I, exhibiting a 1.2 mm Class II molar discrepancy (Fig. 1B). The maxillary dental midline is to the left of the mandibular dental midline (Fig. 1C). This is very common in asymmetric dental platforms. The maxillary dental midline will be shifted to the side that is more Class I if an asymmetric Class II platform presents.

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Randy Newby


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