Résumé
To determine the ratio between width of hamular notches and maxillary central incisors' width at cervical, incisal and contact points. Crosssectional descriptive study. Department of Prosthodontics, Armed Forces Institute of Dentistry, Rawalpindi from Feb 2010 to Aug 2010. Impressions of the maxillary jaw of 125 subjects were made and casts were obtained. A precise caliper was used to make the measurement ofthe widths of the maxillary central incisors at three different levels; the incisal edge [IW], at the level of interdental contact points [ConW] and in the cervical region [CerW]. The hamular width [HW] was measured between the most mesial demarcation point of the left and the right hamular notches.The ratios between the hard palate width [HW] and maxillary central incisor widths at all the three levels [IW, ConW, CerW] were calculated.Data was analyzed using SPSS 16. Of the125 subjects, 52 [41.6%] were males and 73 [58.4%] were females while mean age of the subjects was 26.56 years. Ratios HW/CerW, HW/IW and HW/ConWwere calculated as 6.08+0.18mm, 5.9+0.17mm and 5.81+ 0.17mm. The HW can be used as a preliminary method for determining the width of the maxillary central incisor
Résumé
This randomized clinical trial was carried out to compare post cementation sensitivity in vital abutments of metal-ceramic fixed partial dentures using glass ionomer luting cement and resin based luting cement. It analyzed the results of 182 patients whose records were completed during study duration of 09 months at Department of Prosthodontics, AFID, Rawalpindi. Cold sensitivity tests were used to compare post cementation sensitivity in vital abutments of fixed partial dentures using resin based luting cement and glass ionomer luting cement. Sensitivity was assessed on a modified visual analogue scale of 0-10; scores of 1-4 signified mild sensitivity, 5-7 moderate sensitivity, 8-10 severe sensitivity and score of 0 signified no response. The sensitivity results were checked at base line, at 1 week, at 1 month, at 3 months. Data of 182 subjects of mean age 26.15 +/- 3.15 was evaluated. Chi-sqaure test was used to see the association of type of cement used and the postoperative sensitivity. The P values for the chi square test were insignificant P- values [P>0.05] at all appointments in abutments of fixed partial denture with either resin based or glass ionomer luting cement. The study showed that there is no significant difference between resin based luting cements and glass ionomer luting cements in terms of post cementation sensitivity in vital teeth