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Correlation between Maxillary Central Incisor Crown Form and Maxillary Dental Arch Form:A Model‑Based Morphometric,Cross‑Sectional Study

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Journal of Forensic Science and Medicine 2018年第2期4卷 70-75页

作者： jayasankar purushothaman pillai Riddhi Amrutbhai Patel Alka M Banker J Rajarajeswari Department of Oral Pathology Government Dental College and HospitalAhmedabad Consultant Dental Surgeon Shraddha Orthodontic ClinicBharuch Department of Orthodontia Goenka Research Institute of Dental Science Consultant Dental Surgeon Sai Balaji Dental ClinicGandhinagarGujaratIndia

The crown form of maxillary central incisor tooth is one of the vital phenomenon for a person’s *** crown form has been compared with other anatomical parameters such as arch form and facial *** different classes of tooth forms which relate to square,tapered,and ovoid forms are *** aim of this study was to morphometrically evaluate the correlation between maxillary dental arch form and the maxillary central incisor crown *** cast models of fifty male and fifty female normal occlusion controls in the age group of 18-23 years were *** mesiodistal(MD)dimensions of the maxillary central incisors were measured at incisal(MD_I)and at gingival(MD_G)*** transverse widths of maxillary casts were measured at the first molar and at the first premolar *** measured data were statistically analyzed using the SPSS *** MD dimensions of maxillary central incisor were significantly greater in males than *** ratio between the two MD dimensions also varied significantly among *** intermolar width(IMW)and interfirst premolar width(IPmW)between males and females were highly significant(P<0.05),whereas the ratio between these two parameters in males and females was not significant(P=0.43).Eighty‑eight percentage of the participants were found to have an ovoid type of maxillary arch,while only 45%of them had the ovoid form of maxillary central *** MD_I and the IMW were found to be in the ratio of 1:5.5 in both *** MD_G and the IPmW were in the ratio of 1:4.7 in males and 1:4.5 in *** was a weak positive correlation between MD_I and IMW(r^(2)=0.146)and between MD_G and IPmW(r^(2)=0.05).No significant concordance between the maxillary central incisor crown form and the maxillary arch form was found in this study.

关键词： Intermolar width interpremolar width maxillary arch maxillary central incisor morphometric

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Morphometric Analysis of Maxillary Central Incisor to Determine its Crown Form: A Model‑based Cross‑sectional Study

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Journal of Forensic Science and Medicine 2016年第4期2卷 213-218页

作者： jayasankar purushothaman pillai Riddhi Patel Alka Banker Rajarajeswari J Sukhdev Mishra Department of Oral Pathology Government Dental College and HospitalNational Institute of Occupational HealthAhmedabad1Consultant Dental SurgeonBharuch Department of Orthodontia Goenka Research Institute of Dental ScienceGandhinagarGujaratIndia Consultant Dental Surgeon National Institute of Occupational HealthAhmedabad1Consultant Dental SurgeonBharuch Department of Biostatistics National Institute of Occupational HealthAhmedabad1Consultant Dental SurgeonBharuch

The size and shape of tooth crowns are morphogenetically predetermined during *** maxillary central incisors have contributed to sexual dimorphism,and several classifications of the form of maxillary central incisors are available in the ***,in the present study,aimed to analyze the mesiodistal(MD)measurements at two levels of maxillary central incisor,to determine its crown *** study was conducted on 100 dental plaster models(50 males and 50 females).The MD dimensions at the contact area level MD_incisal(MD_I)and at the gingival papilla level(MD_G)and the gingivo‑incisal height of the crown were measured in the dental models using digital Vernier *** data were analyzed using SPSS version 16 statistical *** mean values of all the three parameters measured were slightly greater for males and also for the left central *** were no significant differences in all the three variables when the right and left incisors were *** differences were noted when the parameters are compared between *** height/width ratio of crown showed a significant difference between male and *** value of the ratio between the two MD dimensions(MD_I and MD_G)was used to determine the crown *** ratio between the MD dimensions at incisal and gingival area showed a significant difference between genders and no such significance was found between right and left central *** is a significant difference in the form of maxillary central incisors between male and female samples and not between right and *** MD dimensions at incisal and gingival thirds decide the form of crown.

关键词： Crown form maxillary central incisor morphometric ratio sexual dimorphism

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