The TPD is a bone bourne device used to perform SA-RPE (Surgically Assisted Rapid Palatal Expansion) an established technique to correct maxillary constriction, buccal cross bite (unilateral or bilateral), anterior crowding and buccal corridors in adult patients.
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Before Treatment
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Six Months Later
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After Treatment
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TPD is a bone bourne device fixed on the palatal shelves, which avoids many of the problems associated with tooth bourne devices.
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No loss of anchorage since the abutment plates are fixed on the palatal bone
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No or very little skeletal relapse can be expected since the actions of expansion and retention are immediately on the bone
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No periodontal membrane compression, root resorption or cortical
fenestration since the teeth are left untouched
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No tipping of teeth
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No, or very little tipping of the segments, since action is in a higher level on the vault. (See clinical publications)
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(We have to draw your attention to cases with extreme narrow palates. If the space between the right and left palatal crests is less than 12mm, it is not possible to place the device.)
Two types available - TPD Classic and TPD All In One. TPD Classic abutment plates are placed separate to the distraction module during surgery and interchangeable modules make large expansions possible in narrow palates.
TPD All In One does not have interchangeable modules as the abutment plates and module are connected making easier surgical placement.
