鎖骨頭蓋異骨症の歯科的所見

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The present report concerns with a case of cleidocranial dysostosis which was observed in a 11-year old male. There was a defect in the frontal of cranium together with a fingersized depression extending from the middle of forehead to the frontal. X-ray observation showed the formation of temporary joints appearing symmetrically at the outer middle one third portions of right and left clavicles. Oral examination revealed that the palate was not formed in the normal arched curve, but slanted up toward the suture line in a gabled form. Oral X-ray examination showed that <61|16>^^^- in the pernanent dentition were erupted normally, but other teeth remained unerupted. The teeth <BA|AB>___- were found slightly resorped at their roots, which was later reconfirmed by patho-histological examinations. In the lower jaw, there were three supernumerary teeth lying at the portion where |<345>^^^- stood. X-ray examination on the patient's mother also disclosed the presence of the symmetrical temporary joints of clavicles. Oral inspection and X-ray examination of her mouth revealed that the teeth <21|12>___- were not yet erupted, <43|34>___- were impacted, <5|5>___- were erupted, <76>___-| were lacking, |<67>___- were unerupted, <8|8>^^^- were impacted and further, three supernumerary teeth were present in the region of lower jaw where the teeth |<1234>^^^- were to come. Besides the above findings, a dwarf tooth was detected in the space between the teeth |<7>^^^- and |<8>^^^-. Thus, the common features shared by the son and his mother could be summarized as follows ; 1) formation of symmetrical temporary joint of clavicles, 2) retention of deciduous dentition 3) retarded eruption of permanent dentition, 4) presence of supernumerary teeth, 5) presence of impacted teeth, 6) gable roofed palated arch, and 7) insufficient closure of frontal. The above findings on both the patient and htis mother strongly point to the manifestations of dominant traits of hereditary factors for the etiology of the present case. Treatment of this case consisted of care of dental caries present and tooth extraction, followed by application of a child denture. Follow-up examinations are being regularly conducted on the patient, aided by X-ray cephalographic analysis.
九州歯科学会の論文

鎖骨頭蓋異骨症の歯科的所見

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