Bizygomatic distance is a relevant reference used to assist and to guide the choice of antero superior prosthetic teeth, especially when no information about the natural teeth was available. The aim of the present pap...Bizygomatic distance is a relevant reference used to assist and to guide the choice of antero superior prosthetic teeth, especially when no information about the natural teeth was available. The aim of the present paper was to determine the distance between the canine tips from a bizygomatic distance and to estimate the width of the upper central incisor in normal-dental-facial indices of Cameroonians. Materials and methods: A cross-sectional study of 900 normal Cameroonians of both sexes was conducted. Measurements of bizygomatic distance, distance between the two upper pointers and the mesio-distal width of the upper central incisor were made with a manual and a digital caliper respectively. The equation for calculating the distance of higher canine pointers from the bizygomatic distance was DCT = 0.081 (BZD) + 26.201. The width prediction of the central incisor was obtained by the following formula: WUCI = 6.252 + 0.019 (BZD) + 0.035(DCT) + 0.062 (Reg cul) + (?0.479) sex. Reg.cul represents the cultural region of origin. Results: Female sex was represented by 56.6% against 43.30% males. The average age was 37± (32 SD) years. The average value of the bizygomatic distance was 130.23 mm, the width of the upper central incisor was 9.39 mm while the distance between the two upper canine pointers was 36.70 mm. Significant correlations between bizygomatic distance, the distance between the two canine pointers, and the width of the upper central incisor were found (P = 0.000). Conclusion: The width of the central incisor and the distance between the two upper canine pointers may be determined by the non-invasively method of the bizygomatic distance in the perspective of choosing the teeth for dental prosthesis.展开更多
Objective To discuss the application of semi-precision attachment in restoring a midfacial defect, including a nasal, upper lip, and anterior maxillary defect. Methods A splinted metal-ceramic crowns （from the upper ...Objective To discuss the application of semi-precision attachment in restoring a midfacial defect, including a nasal, upper lip, and anterior maxillary defect. Methods A splinted metal-ceramic crowns （from the upper right first molar to left molar） and a bar with stud attachments was done. A removable partial denture （RPD） containing the patrix portion of the attachment was then designed to restore the missing maxillary anterior teeth and alveolar ridge. Finally,, The facial prosthesis was joined to the denture utilizing two retentive metal posts on the superior aspect of the removable partial. Results A splinted metal-ceramic crowns （from the upper right frst molar to left molar） and a bar with stud attachments was done. A RPD containing the patrix portion of the attachment was then designed to restore the missing maxillary anterior teeth and alveolar ridge. Finally, The facial prosthesis was joined to the denture utilizing two retentive metal posts on the superior aspect of the removable partial. The prosthesis markedly improved the appearance of the patient and demonstrated good retention. Conclusion Using attachment in restoring rnaxillofacial defect may provide adequate retetion which lead to a sucessful treatment outcome.展开更多
文摘Bizygomatic distance is a relevant reference used to assist and to guide the choice of antero superior prosthetic teeth, especially when no information about the natural teeth was available. The aim of the present paper was to determine the distance between the canine tips from a bizygomatic distance and to estimate the width of the upper central incisor in normal-dental-facial indices of Cameroonians. Materials and methods: A cross-sectional study of 900 normal Cameroonians of both sexes was conducted. Measurements of bizygomatic distance, distance between the two upper pointers and the mesio-distal width of the upper central incisor were made with a manual and a digital caliper respectively. The equation for calculating the distance of higher canine pointers from the bizygomatic distance was DCT = 0.081 (BZD) + 26.201. The width prediction of the central incisor was obtained by the following formula: WUCI = 6.252 + 0.019 (BZD) + 0.035(DCT) + 0.062 (Reg cul) + (?0.479) sex. Reg.cul represents the cultural region of origin. Results: Female sex was represented by 56.6% against 43.30% males. The average age was 37± (32 SD) years. The average value of the bizygomatic distance was 130.23 mm, the width of the upper central incisor was 9.39 mm while the distance between the two upper canine pointers was 36.70 mm. Significant correlations between bizygomatic distance, the distance between the two canine pointers, and the width of the upper central incisor were found (P = 0.000). Conclusion: The width of the central incisor and the distance between the two upper canine pointers may be determined by the non-invasively method of the bizygomatic distance in the perspective of choosing the teeth for dental prosthesis.
基金grant of Shanghai Leading Academic Discipline Fund(T0202)
文摘Objective To discuss the application of semi-precision attachment in restoring a midfacial defect, including a nasal, upper lip, and anterior maxillary defect. Methods A splinted metal-ceramic crowns （from the upper right first molar to left molar） and a bar with stud attachments was done. A removable partial denture （RPD） containing the patrix portion of the attachment was then designed to restore the missing maxillary anterior teeth and alveolar ridge. Finally,, The facial prosthesis was joined to the denture utilizing two retentive metal posts on the superior aspect of the removable partial. Results A splinted metal-ceramic crowns （from the upper right frst molar to left molar） and a bar with stud attachments was done. A RPD containing the patrix portion of the attachment was then designed to restore the missing maxillary anterior teeth and alveolar ridge. Finally, The facial prosthesis was joined to the denture utilizing two retentive metal posts on the superior aspect of the removable partial. The prosthesis markedly improved the appearance of the patient and demonstrated good retention. Conclusion Using attachment in restoring rnaxillofacial defect may provide adequate retetion which lead to a sucessful treatment outcome.
