Context: Infection control is an important concept in the present day practice of dentistry. Disinfection of dental impressions is part of the daily routine in a dental clinics. After disinfection, it is important that impressions remain dimensionally stable. Aim: The purpose of this study was to compare the effect of chemical disinfectants and ultraviolet (UV) disinfection on the dimensional stability of the polyvinyl siloxane impressions. Objectives: The objective of the study is (1) To evaluate the effect of chemical disinfectant (2% glutaraldehyde and 1% sodium hypochlorite) and UV disinfectant on the dimensional stability of polyvinyl siloxane impression material. (2) Comparative evaluation of the dimensional discrepancy between the cast poured from the polyvinyl impressions material, that is subjected to chemical disinfectant and UV disinfectant to that of cast poured from impressions that were nondisinfected. Materials and Methods: A customized tray was fabricated to make impressions. Impressions were divided into four groups, 10 samples were disinfected with 2% glutaraldehyde for 20 min, 10 samples were disinfected with 1% sodium hypochlorite for 20 min, 10 samples were disinfected with UV light for 20 min, and 10 samples were not subjected to disinfection which served as control group. All the samples were poured after 30 min in die stone. Measurements were recorded using traveling microscope of 0.001 accuracy. Statistical analysis used in this study was the one-way ANOVA test. Results: The result showed significant dimensional changes in samples disinfected with 2% glutaraldehyde and 1% sodium hypochlorite, whereas samples disinfected with UV disinfectant unit showed no significant dimensional changes when compared with control group samples. Within the chemical groups, impressions disinfected with 1% sodium hypochlorite showed more discrepancy in the dimensions when compared to the 2% glutaraldehyde disinfected group. Conclusions: UV light disinfectant can be safely used to disinfect impressions as compared to chemical disinfectants in clinical prosthodontic procedures.

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Background: Loss of teeth affects the masticatory ability and overall health of the patient especially posterior teeth as they contribute more to mastication as compared to anteriors. Loss of teeth can lead to undesirable consequences and early rehabilitation with any type of prosthesis can lead to desirable changes and thus missing teeth should be replaced as soon as possible. Aims and Objectives: To determine the change in masticatory ability and quality of life (QoL) after replacement of missing posterior teeth by fixed dental prosthesis. Methodology: Maximum bite force was recorded before and after treatment. Also a self-perceived questionnaire was filled by the patient to assess the change in QoL. Patients with missing posterior teeth were included. Patients with acute infections or systemic diseases were excluded. Results: Significant change (p=0.0001) in both masticatory ability and QoL of the patient was seen. The co-relation of both was clinically significant while statistically non-significant (p=0.77). Results were significant for both the studied parameters but co-relation between them was no significant. It is because of the patients perceived satisfaction of the overall treatment. Conclusion: Rehabilitation of posterior teeth improves mastication and also overall oral health related QoL.

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An area of soft tissue along the junction of the hard and soft palate on which pressure, within physiologic limits of the tissues, can be applied by a denture to aid in its retention can be defined as the posterior palatal seal (PPS). The functions of PPS are to provide retention, to prevent food from getting under the base of the denture, to diminish the gag reflex, to make the denture less conspicuous to the tongue, and to counteract denture warpage due to dimensional changes during the curing process by providing a thick border. The location and recording of the PPS, although being a very significant step, are still a frequently neglected procedure, because of lack of proper knowledge. Clinically, various different locations of the vibrating line resulted from different methods. This study was therefore designed to evaluate if the posterior and anterior vibrating lines could be distinguished as separate lines of flexion and to evaluate type of soft palate among Indian population, i.e., Wardha population. The following conclusions were made, from the above study: (a) Two separate lines of flexion could be located in Indian population, when the appropriate action was elicited for the posterior and anterior vibrating lines; (b) in flat group (group III), the vibrating line was farther posteriorly (i.e., closer to a line joining both hamular notches), resulting in the broadest PPS area, whereas the posterior extension of the PPS area in the deep vault was less than in groups II (medium) and III (deep). (c) In group III (flat), the width of the PPS area was greater than in groups I (deep) and II (medium). This width was the least in group I (deep).

Until and unless the disease is recognized as a disease entity, a little progress has been made in understanding its etiology and in developing a predictable treatment planning, restoration, and prevention of the tissues. In a process carried out to study a disease entity, whether it be cardiac disease, dental caries, or periodontal disease, it is helpful to study its pathology (the gross and microscopic structural changes of the disease), its pathophysiology (the mechanisms or disordered functions of the disease), its pathogenesis (the life history), and its epidemiology (the worldwide prevalence of the disease and various interrelated factors). The ultimate aim of such researches is the better understanding of the etiology and pathogenesis of the disease, and thereby with such understanding leading to a predictable treatment planning and ultimately the prevention or control of these factors. Osteoporosis is a major health entity affecting the elderly population and thereby resulting in approximately 1.3 million spontaneous fractures in the USA every year. The above clinical condition is a deficiency of bone mass, or skeletal osteopenia, to that level where bone cannot provide adequate mechanical support. Many of the reported studies used inadequate measures of both skeletal and mandibular bone in evaluating their possible relationships. This literature review attempts to determine relationships between the total skeletal bone mass and bone mass of the mandible in the population suffering with osteoporosis.

An ocular prosthesis is an artificial eye that replaces the natural eye following an enucleation, evisceration, or orbital exenteration. This maxillofacial prosthesis also boosts the lost social and mental well being of a patient. But, the success of any prosthesis depends upon various factors mainly on the functional recording of the tissue bed the anophthalmus eye. In this case report, a combination of impression technique and procedure is followed to achieve a stable and retentive ocular prosthesis.