Table of contents   

EFFECT OF IN-OFFICE BLEACHING ON SHEAR BOND STRENGTH OF NEWER UNIVERSAL BONDING AGENTS   

Abstract: Objective: To evaluate the effect of in office bleaching on the shear bond strength of a new universal bonding agent to enamel

Materials and methods: 30 human maxillary premolar teeth extracted for orthodontic purposes were selected. Roots of all teeth were embedded in acrylic resin block with only 3-4mm of the crown exposed. Specimens were randomly divided into two groups (n=15).Group I- positive control group, intact enamel, no bleaching done. Group II -experimental group-enamel surfaces were bleached with Pola office (35% Hydrogen Peroxide Gel, SDI). Each specimens of Group I and Group II were etched with 37% phosphoric acid (Scotchbond etchant gel ,3M ESPE) and bonded with Universal Bonding agent (3M™ Single Bond Universal Adhesive ). This was followed by composite (Filtek Z350 XT, 3MESPE, Dental Products) build-up in incremental technique in 3 increments of 1mm each to a height of 3mm. All specimens were then stored in distilled water for 24 hours. Shear bond strength was tested using universal testing machine and vertically loaded at a crosshead speed of 1 mm/min in shear mode until fracture occurred and data were analysed using ANOVA.  

Results: Results showed that there was a statistically significant difference in the bond strength between unbleached and bleached teeth (P <0.005). The mean bond strength of control group was seen to be significantly higher (25.01 ± 1.76) as compared to the experimental group (6.82 ± 0.53).

Conclusion:  The bleaching significantly affects bond strength of universal bonding agent to enamel

Keywords: Universal bonding agent, in office bleaching, shear bond strength

COVID-19 –THE NEW HAVOC AMONG PEDIATRIC DENTISTS   

Abstract: The novel virus severe acute respiratory syndrome coronavirus 2(SARS – Cov -2) causing coronavirus disease has become one of the global pandemics. This has become one of the most significant challenges to the health care profession. Dental practices are focal points of cross-infection. This is because the work environment of a dentist involves close patient contact and aerosol production. Children are also more prone to this infection. As the number of COVID – 19 cases may increase in the future, the pediatric dentist should be well informed about the signs and symptoms as well as the strict infection control measures to be followed in these cases. Also, parents should be reassured that pediatric dentists use all the necessary precautions needed to avoid the spread of the disease. The pediatric dentist should also try to reduce the stress in parents and children and create a relaxed and anxiety-free environment.The aim of this paper is to highlight the clinical recommendations to be followed by pediatric dentists providing care for children during this pandemic. Special attention should be given to medically compromised children. Minimization of aerosol-generating procedures and case-based selection of minimally invasive methods are recommended.

Keywords: COVID-19, Pandemic, Pediatric dentistry,Aerosol generating procedure, Atraumatic Restorative Technique, Interim Therapeutic Restoration, Filtering Facepiece, Personal Protection Equipment, Silver Diamine Flouride

SUCCESSFUL MANAGEMENT OF GINGIVAL RECESSION ASSOCIATED WITH ROOT CARIES AND NON CARIOUS CERVICAL LESION USING SUB EPITHELIAL CONNECTIVE TISSUE GRAFT- A CASE REPORT   

Abstract: Gingival recession is one of the most common manifestations of periodontal disease. The exposed cementum may be affected with carious and non-carious cervical lesions. Only restorative approach to treat these lesions to establish esthetics and function may not be sufficient. This paper presents gingival recession associated with carious and NCCL, successfully managed by soft tissue grafting    (sub-epithelial connective tissue graft), resin-modified glass ionomer cement and composite restoration with stable results for a follow up period of 6 months.

Keywords: Sub epithelial connective tissue graft, caries, non carious cervical lesion, periodontics-restorative interrelationship.

MANAGEMENT OF MANDIBULAR SECOND MOLAR WITH C-SHAPED CANAL-A CASE REPORT   

Abstract: The variability of root canal system morphology presents a continuous challenge to endodontic diagnosis and therapeutics. C-shaped canal configuration is a variation that has a racial preference and is commonly seen in mandibular second molars. In this configuration, the canals are connected by slit or web. The presence of fin, slit and web makes through debridement difficulty for the clinician. This case report deals with the management of case of C-shaped canal in mandibular second molar. Clinical examination revealed a Mandibular second Molar restored with temporary restorative material, tender on percussion and tooth showed no response to electric and thermal tests. Therefore, endodontic treatment was done and the patient reported complete relief of pain and found to be asymptomatic on review.

Keywords: C-shaped canal, Mandibular second Molar, Root canal Anatomy

PERMANENT MAXILLARY CANINE WITH TWO ROOT CANALS: AN ABBREVIATED CASE REPORT   

Abstract: For successful endodontic treatment, the clinician should have thorough knowledge about the variations in the root canal morphology. The science of extra canal is important in endodontics as failure to locate and treat an extra canal is the prime cause for failure of root canal treatments. This case narrates about the treatment of a maxillary canine with two root canals with deep class III dental caries. Clinical examination revealed a maxillary canine with carious lesion and tooth showed no response to electric and thermal tests.  Radiographic examination revealed a distal carious lesion (close proximity to pulp) and also appeared to have an additional canal in this tooth. Therefore, endodontic treatment was done and the patient reported complete relief of pain and found to be asymptomatic on review. 

Keywords: Maxillary permanent canine, endodontic treatment, root canal anatomy, two root canals

MICROABRASION - A MINIMALLY INVASIVE APPROACH TO MANAGE MILD TO MODERATE FLUOROSIS CASES.   

Abstract: Aesthetics is a primary concern for most people when they smile and being minimally invasive while treating enamel surface irregularities and stains is the primary concern for the operating dentist. Bleaching, resin based restorations and Porcelain laminate veneers are also treatment modalities1 that can be used for correction of enamel surface lesions in specific clinical scenarios. This case report describes enamel microabrasion as a minimally invasive treatment modality for mild to Moderate fluorosis cases where the lesion is in superficial enamel layers.

Keywords: Microabrasion, Mild Fluorosis, Moderate Fluorosis

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