ABSTRACT
Bonding composites in deep posterior proximal cavities may be a challenge. The aim of the present study was to evaluate the preferences of dentists in selection of technique to prevent microleakage in posterior deep proximal composite restorations. One hundred questionnaires were randomly distributed to the dental surgeons working in hospitals and clinics in Lahore. The questionnaires were designed to elicit information regarding selection of technique for posterior composite restoration. Ninety two completed questionnaires were returned. Fifty eight general dental practitioners and thirty four specialists responded to the questionnaire. 62% dentists adopted sandwich technique using RMGIC, 60% used GIC in sandwich restoration with immediate composite placement, 39% usedflowable composite as a gingival increment, 4.4% used GIC with delay of 48 hours for composite placement and 4.4% reported to do restoration without using any liner. Difference was found among three groups of dentists in the selection of restorative technique but it was not significant. Sandwich restoration with RMGIC or GIC was the main preference among dentists in deep posterior proximal restorations followed by the use offlowable composite
ABSTRACT
This descriptive study was conducted to study the variation in number and pattern of root canals in mandibular incisors in a sample of Pakistani population. A Sample of 100 teeth extracted due to periodontal or carious destruction was surveyed through labio-lingual and lateral periapical radiographs. Roots were then sectioned at 1, 2 and 3mm from apex at 20 degree angulation along the long axis of roots. Sections were observed under stereomicroscope and number and shapes of root canals were recorded. Both observations were combined to classify the root canal patterns according to Vertucci's Classification. Ninety one [91] roots canals were classified at Vertucci's type I. Eight teeth showed double root canals. Two roots had Type V and six had Type III canal configuration. Labio-lingual periapical radiographs were unable to detect the second root canals in any of the teeth with double canals. The need for conducting more research with advanced imaging techniques and larger sample size was highlighted in this study. The limitation of periapical radiographs in locating lingual canals in mandibular incisors was also observed
ABSTRACT
The aim of the present study was to evaluate the preferences of dentists in Lahore regarding the selection of matrix system for posterior composites. 100 questionnaires were randomly distributed to the dental surgeons working in hospitals and clinics in Lahore. The questionnaires were designed to find out the preferences of dentists for selection of matrix system for posterior proximal composite restorations. 92 completed questionnaires were returned. 58 general dental practitioners and 34 specialists responded to the questionnaire. 65.2% of the dentists preferred Tofflemire Matrix System, for 53.3% selection depended upon the final tooth preparation requirements, 41.3% marked sectional matrix system to be the best and 24% of the dentists had a preference of using separation ring with sectional bands. Experience of the dentists had no remarkable effect on the preference. Universal Matrix System [Tofflemire] was the preference of the majority of the dentists for direct class II composite restorations. Sectional Matrix System with separation ring was mostly preferred by the specialists but the selection depended upon the restorative requirements
Subject(s)
Humans , Composite Resins , Random Allocation , Surveys and QuestionnairesABSTRACT
This cross-sectional study was carried out at Lahore Medical and Dental College to evaluate dental caries status amongst the dental undergraduates. The decayed, missing and filled teeth were evaluated according to the DMFT scoring scale .310 dental students from first year to final year with age ranging from 18-24 years were included in the study. The overall mean DMFT score was 1.38 +/- 0.54 with decay [D] component of 0.54 +/- 0.62, missing [M] component of 0.01 +/- 0.10 and filled component of 0.83 +/- 0.68. There was no significant difference in mean DMFT score among the different professional years [p=0.192]. However the decay component of the mean DMFT was significantly [p=0.001] decreased and filled component significantly increased [p=0.0001], as the student passed through different professional years, reflecting positive influence of their dental education on their oral health status
Subject(s)
Humans , Male , Female , Students, Dental , Cross-Sectional Studies , Oral Health , Dental Caries , Oral Hygiene , Health Education, DentalABSTRACT
The study was carried out to evaluate and compare dentine margin microleakage of nano-filled resin composite restorations placed with a RMGIC using the co-cure technique and those placed with an 'all-in-one' self-etch DBA. In premolar teeth, that had to be extracted for orthodontic reasons, two proximal boxes with gingival margins placed in dentine were prepared. Restorations were inserted using co-cure method with RMGIC plus a nano-filled resin composite in one proximal box, and self-etch DBA plus nano-filled resin composite in other proximal box. After two weeks, teeth were extracted and was sectioned mesio-distally. The dye leakage length was measured using a stereomicroscope. The mean value of microleakage for co-cure technique was found to be lesser than that for all-in-one dentine bonding agent. Co-cure technique was found significantly superior to all-in-one DBA in its sealing ability at gingival margin