ࡱ> 796q` RbjbjqPqP2"::D4 < x@*T p $jh>     H A UF0@" v: T D   @xxxdDxxx$(@ Title:Correlation of gonial angle size with cortical thickness, height of the mandibular residual body, and duration of edentulism Author(s): HYPERLINK "http://wos02.isiknowledge.com/CIW.cgi?SID=Y6D1KGgC3Nkf68d5iEe&Func=OneClickSearch&field=AU&val=Xie+QF&curr_doc=22/1&Form=FullRecordPage&doc=22/1" \o "one-click search" Xie QF,  HYPERLINK "http://wos02.isiknowledge.com/CIW.cgi?SID=Y6D1KGgC3Nkf68d5iEe&Func=OneClickSearch&field=AU&val=Ainamo+A&curr_doc=22/1&Form=FullRecordPage&doc=22/1" \o "one-click search" Ainamo A Source:JOURNAL OF PROSTHETIC DENTISTRY 91 (5): 477-482 MAY 2004 Document Type:Article Language:English  HYPERLINK "http://wos02.isiknowledge.com/CIW.cgi?SID=Y6D1KGgC3Nkf68d5iEe&Func=PagedCitedRefList&UT=000221531500013&doc=22/1&rec_id=134787456" Cited References: 28 Times Cited: 0 HYPERLINK "xieqiufei2004.pdf" \t "_blank"  INCLUDEPICTURE "http://images.isiknowledge.com/WoK3/Images/Links/WOK3/Generic_Src.gif" \* MERGEFORMATINET  Abstract:Statement of problem. Previous reports on widening of the gonial angle in edentulous patients are conflicting. Aside from age and loss of teeth, other factors may influence change in gonial angle. Purpose. This study evaluated gonial angles from panoramic radiographs of young and older dentate subjects and elderly edentulous subjects and investigated the relationship of gonial angle size to gender, age group, cortical thickness at the gonial angle, height of the mandibular residual body, and edentulous period in elderly edentulous subjects. Material and methods. A total of 356 panoramic radiographs of 3 groups of subjects were evaluated: the young dentate group, 131 subjects (mean age 27 years); the older dentate group, 97 subjects older than age 52 (mean age 64 years); and the elderly edentulous group, 128 subjects aged 76, 81, or 86 (mean age 80 years). The gonial angle, cortical thickness at gonial angle, and height of mandibular residual body were measured from panoramic radiographs made with the same radiographic equipment and selected according to criteria. A structured questionnaire was used to determine the history of edentulism. Paired and impaired 2-tailed t tests served to test the difference in gonial angle measurements, and a linear regression was performed to study correlations (alpha = .05). Results. Difference in size of the gonial angle was found between dentate men and women (P < .05 in the young and P < .001 in the older dentate group), but not between elderly edentulous men and women. The elderly edentulous subjects had significantly larger gonial angles (128.4 degrees +/- 6.6) than did the young (122.4 degrees +/- 6.6, P < .001) and older dentate subjects (122.8 degrees +/- 6.6, P < .001). The angle size was negatively related to cortical thickness at the gonial angle only among 76-year-old edentulous women (P < .01), and was associated with average height of the mandibular residual body in the edentulous men and women (P < .01). No association existed between angle size and duration of edentulism. No differences were significant in any test of intraexaminer error. Conclusion. In this study, elderly edentulous subjects had larger gonial angles than did dentate subjects. The angle size was correlated with low height of the mandibular residual body and with its cortical thickness in edentulous women. KeyWords Plus:METABOLIC BONE LOSS; COMPLETE DENTURE WEARERS; RADIOGRAPHIC INTERPRETATION; MASTICATORY MUSCLES; FACIAL MORPHOLOGY; DIAGNOSTIC-TOOL; ANGULAR CORTEX; RESORPTION; STATE Addresses:Xie QF (reprint author), Peking Univ, Sch Stomatol, Dept Prosthodont, Zhongguancun So Ave 22, Beijing, 100081 Peoples R China Peking Univ, Sch Stomatol, Dept Prosthodont, Beijing, 100081 Peoples R China Univ Helsinki, Inst Dent, Dept Prosthet Dent, Helsinki, FIN-00014 Finland E-mail Addresses: HYPERLINK "mailto:qfxie@public.bta.net.cn" qfxie@public.bta.net.cn Publisher:MOSBY, INC, 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 USA Subject Category:DENTISTRY, ORAL SURGERY & MEDICINE IDS Number:822IC ISSN:0022-3913 E F L M O P        9 T b l u    ! $ % + 7 > жККККiжККiж,h6.h6.>*B*CJKHOJQJ^Jph2h6.h6.5>*B*CJKHOJQJ\^Jph6jh6.h6.B*CJKHOJQJU^JaJph3h6.h6.5B*CJKHOJQJ\^JaJph-h6.h6.B*CJKHOJQJ^JaJph/h6.h6.5B*CJKHOJQJ\^Jph# T l  3!S$K-1$9Da$gd6. $1$a$gd\ $1$9Da$gd6.> ? j k m !/  ~g~g~gK05h\h6.B*CJKHOJQJ^JaJmHphsH7h\h6.5B*CJKHOJQJ\^JmHphsH-h6.h6.B*CJKHOJQJ^JaJph/h6.h6.5B*CJKHOJQJ\^Jph"h\B*CJOJQJaJo(ph.jhrh\B*CJOJQJUaJph4jh\h\B*CJOJQJUaJphh\B*CJOJQJaJph(jh\B*CJOJQJUaJph  89PQS]ɖ{h6.-h6.h6.B*CJKHOJQJ^JaJph/h6.h6.5B*CJKHOJQJ\^Jph4h\h6.>*B*CJKHOJQJ^JmHphsH5h\h6.B*CJKHOJQJ^JaJmHphsH6jh6.h6.B*CJKHOJQJU^JaJph0182P. 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