Effect of joining the sectioned implant-supported prosthesis on the peri-implant strain generated in simulated mandibular model.

Aim: The aim of this study is to evaluate the strain developed in simulated mandibular model before and after the joining of an implant-supported screw-retained prosthesis by different joining techniques, namely, arc welding, laser welding, and soldering.

Materials And Methods: A specimen simulating a mandibular edentulous ridge was fabricated in heat-cured acrylic resin. 4-mm holes were drilled in the following tooth positions; 36, 33, 43, 46.

Effect of gallium-arsenic laser on photosensitized periodontopathic anaerobic organisms: An study.

Background: The mainstay of periodontal therapy is mechanical removal of subgingival plaque. There is considerable interest in supplementing it with the use of antibiotics and antiseptics. Many drawbacks are associated with these adjunctive pharmacological regimens such as development of resistance to antibiotics and disruption of microflora of the gastrointestinal tract.

Evaluation of demineralization adjacent to orthodontic bracket and bond strength using fluoride-releasing and conventional bonding agents.

Background And Objectives: One of the most difficult problems encountered in orthodontic treatment with fixed appliance is the control of enamel demineralization around the brackets. Fluoride-releasing bonding adhesives were introduced to aid in the prevention of demineralization adjacent to orthodontic brackets. Hence, an in vitro study was conducted to evaluate and compare demineralization adjacent to the orthodontic bracket and the bond strength using fluoride-releasing adhesive and conventional adhesive.

K-file vs ProFiles in cleaning capacity and instrumentation time in primary molar root canals: an in vitro study.

Objectives: This study compares the efficiency of manual K-files and rotary ProFiles in cleaning capacity and instrumentation time in primary molar root canals.

Materials And Methods: Seventy-five maxillary and mandibular primary molar root canals were instrumented with ProFiles and K-files in the step-back manner from size #10 to #40. The teeth were decalcified, dehydrated and cleared, and analyzed for the presence of dye remaining on the root canal walls, which served as an evidence of cleaning capacity of both the techniques.

Comparative evaluation of slot versus dovetail design in class III composite restorations in primary anterior teeth.

The esthetic restorations of primary anterior teeth have always occupied an important part of the pediatric dentist's armamentarium. Various materials have been tried for this purpose and ample materials have been researched in an attempt to fulfill the prerequisites for an ideal esthetic restorative material.Composite resins have been traditionally noted to have decreased bonding ability to primary teeth and the use of secondary retentive features has been advocated to increase bonding.

Reverse transcriptase polymerase chain reaction study to evaluate dissemination of cancer cells into circulation after incision biopsy in oral squamous cell carcinoma.

Background: Tissue manipulation by incisions, radiotherapy, and palpation may lead to dissemination of cancer cells into circulation. Circulating cancer cells in blood play a central role in metastatic process. Their numbers can be very small and for their detection,reverse transcriptase polymerase chain reaction (RT-PCR) has been successfully used in this study.

Partial expression of Papillon-Lefèvre Syndrome.

Papillon- Lefèvre Syndrome (PLS) is a rare autosomal recessive trait, which is transmitted with an estimated frequency of one to four per million individuals. It is characterized by palmar plantar keratosis and severe early-onset periodontitis affecting both deciduous and permanent dentition. In this report, we present clinical, microbiological and leukocyte function test findings of a thirty-five year-old patient with symptoms typical of Papillon-Lefèvre Syndrome except for premature loss of deciduous and permanent dentition.

Evaluation of relative concentration of bacteria in 1% acid red 52- stainable and non-stainable dentin.

Modern management of caries stresses on non-invasive techniques wherever possible with maximum protection of sound tooth structure. Various dyes provide a highly contrasting visual clue by staining only infected dentin, thus clearly demarcating it from the affected normal dentin. Utilizing this property of preferential staining of the "Caries Detector" the current study was carried out to evaluate the relative concentration of bacteria in 1% Acid Red 52-stainable and non-stainable dentin.

Dental erosion in children : an increasing clinical problem.

Epidemiological studies carried out on dental erosion have established that the prevalence is high in young people and adolescents. The objective of this study was to look at the prevalence and etiology of dental erosion, particularly in children, and its practical management for its possible control. The children between 5-6 yrs were examined and findings recorded, and this study has shown that approximately 1/3rd of 5-6 yrs old children have appreciable tooth wear and dental erosion.