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Fig. 3. Treatment outcome of Parry–Romberg syndrome (PRS) patients according to the dental phenotype. A, Patient #8 (left side involvement) had congenital missing of #23 and #25 (x-mark), impaction and short root of #24 (arrow), and prolonged retention of #63 and #65. After extraction of #65, #24 was aligned using forced eruption with fixed orthodontic treatment. #63 was maintained for substitution of #23 and spaces were created on the mesial and distal sides of #63 to compensate for the absence of #25. B, Patient #6 (right side involvement) had multiple congenital missing of #12, #14, #16, #17, #41, #44–#47 (x-mark) and microdontia with short root of #13 and #15 (arrow). She was treated with orthognathic surgery with fixed orthodontic treatment. Then, multiple-unit bridges (#11-X-X-13-15 and #31-X-42-43-X) were fabricated; dental implants could not be placed because of severe atrophy of the alveolar bone. C, Patient #9 (left side involvement) had multiple congenital missing of #21–#27, #31, #32, #34, and #35 (x-mark). She was treated with orthognathic surgery with fixed orthodontic treatment. Then, congenitally missing teeth were replaced by retained deciduous teeth and dental implant prosthesis. D, Patient #7 (left side involvement) had dilacerated root of #22 (arrow). It was aligned at an appropriate location without side effect such as root resorption.
Korean J Orthod 2020;50:407~417 https://doi.org/10.4041/kjod.2020.50.6.407
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