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KMID : 0361919930230040607
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Korean Journal of Orthodontics
1993 Volume.23 No. 4 p.607 ~ p.618
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A clinical study on the centric discrepancy in postorthodontic patients
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Abstract
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If the centric prematurity occurs after orthodontic treatment, it creates centric slide regarded as a possible factor in the cause of temporomandibular disorder and/or postorthodontic relapse.
The purpose of this study was to investigate the manner of centric prematurity and centric slide in postorthodontic patients. The 36 orthodontic patients who had been treated with edgewise appliance at least 3 months previously were used in this
study.
After recording centric relation by the leaf gauge technique, the centric prematurity and centric slide were studied used SAM2 articulator and mandibular position indicator.
@ES The results were as follows:
@EN 1. The highest percentage of centric prematurities were found on the second molars.
2. The buccal incline of the palatal cusp was the most frequent area of centric prematurities in the maxilla, while the lingual incline of the buccal cusp was the most frequent area in the mandible.
3. There were no trends in the direction of centric slide on the mandibular position indicator.
4. There were no significant differences in centric discrepancies between the premolar extraction and nonextraction group.
KOREA J. ORTHOD 1993 ; 23(4) : 607-618.
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