Does body mass index affect soft tissue facial anthropometric measurements? / ¿El índice de masa corporal afecta las mediciones antropométricas faciales de tejidos blandos?

SUMMARY: This study aims to test the effect of body mass index on certain facial soft tissue measurements. Three hundred Arab Iraqi young adults with different body mass indexes were randomly selected from the population in Basrah city. Different horizontal and vertical soft tissue measurements were obtained using different calipers. Sex differences were verified by an independent sample t-test, while the effect of different body mass index categories was evaluated by one way ANOVA and Tukey tests. Obese males showed significantly higher mean values for weight, nose width, face width, head circumference, and lower facial third length (p≤0.001). Obese females shared these parameters with obese males in addition to mouth width. Regarding sex differences, nearly all measurements were significantly higher in males than in females. Obese individuals had wider faces, noses and mouths; larger head circumferences and facial indexes; and longer lower facial third lengths. Moreover, they possessed smaller inner canthal widths as well as upper and middle facial thirds in comparison to normal and overweight subjects.

RESUMEN: Este estudio tuvo como objetivo probar el efecto del índice de masa corporal en determinadas medidas de tejidos blandos faciales. Trescientos adultos jóvenes iraquíes con diferentes índices de masa corporal fueron seleccionados al azar de la población de la ciudad de Basora. Se obtuvieron diferentes medidas de tejidos blandos horizontales y verticales utilizando diferentes calibradores. Las diferencias de sexo se verificaron mediante una prueba t independiente, mientras que el efecto de diferentes categorías de índice de masa corporal se evaluó mediante pruebas ANOVA y Tukey de una vía. Los hombres obesos mostraron valores medios significativamente más altos de peso, el ancho de la nariz, el ancho de la cara, la circunferencia de la cabeza y la longitud del tercio inferior del rostro (p≤0,001). Las mujeres obesas comparten estos parámetros con los machos obesos además del ancho de la cavidad oral. Con respecto a las diferencias de sexo, casi todas las medidas fueron significativamente más altas en hombres que en mujeres. Las personas obesas tenían caras, narices y bocas más anchas; circunferencias más grandes de la cabeza e índices faciales; y longitudes de tercio inferior facial más largas. Además, se observaron anchos cantales mediales más pequeños, así como tercios faciales superior y medio en comparación con sujetos normales y con sobrepeso.

Comparison of two cooling procedures on linear dimensional change of heat cured acrylic maxillary complete denture base

Certain dimensional changes are known to occur in acrylic resin during or after its processing. These changes hold clinical significance because better adaptation of denture base to oral tissues is related to minimum dimensional changes after processing. This study aimed at the evaluation of linear dimensional changes of maxillary heat cured denture bases after bench cooling and rapid cooling procedure. It was a randomized controlled trial, done in Central Dental Laboratory at Armed Force Institute of Dentistry. 60 heat cured acrylic resin [PMMA], maxillary complete denture bases divided into two equal groups [A and B] of 30 each randomly using a scientific random number table were fabricated bypassing through standard heating cycle and then the flask cooled by bench cooling method and rapid cooling method for 30 each. Linear dimensional changes from point A to B, A to C and B to C were noted. The study sample were considered to be significant with the p-value 0.003, 0.001 and 0.001 respectively. Bench cooling is a preferable technique to improve the mucosal adaptation of the denture base and less dimensional changes

Evaluation of oral function after removable partial denture therapy

This study aimed to evaluate the oral function after removable partial denture therapy from patients perspective. It was a descriptive case series. One hundred and ten partially dentate subjects were studied in the Department of Prosthodontics, de, Montmorency college of dentistry, Lahore. All the subjects were given oral health impact profile -14 questionnaire before and one month after provision of removable partial denture. Before and after treatment responses were recorded on 5 point Lickert scale. The post treatment scores were compared with pretreatment baseline scores and improvement in oral functional problems were assessed. 96% of study subjects had problems in pronouncing words, which persisted in 56% of the subjects after using removable partial denture. 94% of the study group had taste problems before removable partial denture treatment, which improved in 50% of study population after therapy. This suggested that removable partial dentures had a positive impact on oral function in almost half of the population. Lack of improvement in remaining group can be attributed to lack of education and awareness which was responsible for negative attitude of these patients towards removable partial dentures

Comparison of nasolabial angle in young adults and middle aged dentate and elderly edentulous subjects

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