ABSTRACT
This cross-sectional study clinically assesses the tightness of proximal contact points of fixed dental prosthesis with natural teeth. Sixty nine [69] patients visiting the Department of Prosthodontics, Armed Forces Institute of Dentists [AFID], Rawalpindi, were included. The crowns, as a single unit or terminal abutment of bridge, prepared and fabricated at the same institute were included. A total of 142 Proximal Contact Points [PCPs] were assessed with the dental floss and categorized as acceptable, loose and tight. Among these, 83 [58.4%] were acceptable, 41 [28.8%] loose and 18 [12.6%] were tight. Out of 142 PCPs, 104 [73.2%] were Porcelain Fused to Metal [PFM] and 38 [26.7%], all metal. Out of 104 PFM crown/FPD PCPs 59 [56.7%] were acceptable, 32 [30.7%] were loose and 13 [12.5%] tight. Out of 38 all metal crown/FPD PCPs 24 [63%] acceptable, 9 [23%] were loose and 5 [13%] were tight. PCPs must be checked for acceptability before cementation. The PCPs of adjacent natural dentition in same patient may serve as guide for assessment
ABSTRACT
To compare the mean value of nasolabial angle in dentate and edentulous subjects in young adults, middle aged dentate [having normal occlusion] and elderly edentulous subjects. Cross-sectional comparative study Place and Duration of Study: The study was conducted in the Department of Prosthodontics, Armed Forces Institute of Dentistry, and Army Medical College, Rawalpindi from September 2007 to November 2008. A total of 250 subjects were divided in three age groups. Group 1: 100 Subjects 20-30 years, Group 2: 100 subjects 35-45 years and Group 3: 50 edentulous subjects >50 years. The subjects with Intact maxillary and mandibular arches and Angle's Class-I molars, canine and incisor relationship were included. Standard lateral cephalometric radiographs of the heads were traced and nasolabial angle was measured. The mean values of nasolabial angle in dentate and edentulous were 96.79° +/- 2.6 and 111.40o +/- 2.51respectively. The mean values of nasolabial angle in young adults [20-30 years], middle aged [35-45 years] and old edentulous [>50 years] subjects were 97.39o +/- 2.94, 96.19o +/- 2.58 and 111.40o +/- 2.51respectively. The difference in mean values of nasolabial angle among three groups, was statistically significant [p<0.001]. Conclusions: Nasolabial angle in middle aged subjects is greater than younger subjects and even greater in elderly edentulous subjects. Sexual dimorphism exists as males have greater nasolabial angle in younger age. While fabricating dental prosthesis nasolabial angle may be restored near to the dentate subjects
ABSTRACT
The objectives of this studs was to compare the CIE L*a*b* values of cervical, middle and incisal segments of permanent maxillary central incisors using standardized digital camera and computer software [Adobe Photoshop]. Maxillary anterior teeth of one hundred subjects were photographed under the same light effects and images were imported into the computer. The CIE L*a*b* values of the cervical middle and incisal segments [2-mm area in the center of each segment] of permanent maxillary central incisors were obtained by using the Adobe Photoshop [version 7]. SPSS version 12 was used for data analysis. Statistical significance was determined by using ANOVA at confidence interval 95%, P<0.05 was considered significant. There is significant difference in L*, a* and b* values of cervical, middle and incisor segments of maxillary central incisor [p<0.001]. Color differences in Cervical/Middle, Cervical/Incisal and Middle/Incisal were significantly different [p = 0.025]. The shade of cervical, middle and incisal segments of permanent maxillary central incisor is significantly different from each other