Background: Laboratory bacterial cross-contamination is very high in dentistry, to avoid this disinfection is a necessity. Gypsum products are a medium of cross infection between the dentist and the laboratory personnel. The purpose of this study was to determine, if Chloramine-T is added as a disinfectant in the gypsum type III material, then are there any changes in the setting time and abrasion resistance of the gypsum. Methods: For setting time vicat needle apparatus (Brand- AIMIL Ltd.) was used for two groups one with Chloramine-T (Group-1) and one without Chloramine-T (Group-2) as disinfectant. For abrasion resistance a two body wear test was used, testing was done in two groups one with Chloramine-T (group-3) and one without Chloramine-T (Group-4) as disinfectant. For both the tests, each group had 35 samples. Pre weight and post weight of the samples were recorded for both control and experimental groups to measure abrasion resistance. For setting time the initial setting time was recorded for both the groups. Results: It was discovered that the mean value calculated for setting time was 0.08 seconds more than the control group which is significant statistical value but this difference does not make a significant change while clinically manipulating gypsum as the initial setting time is 4-6 minutes. Also the difference in the mean value was not found as statistically significant for abrasion resistance of type III gypsum product before adding Chloramine-T between the control and experimental group. Conclusions: The physical features of dental stone are unaltered with the addition of Chloramine-T as a disinfected for type III gypsum product and hence it can be utilised for all of its dental applications. Gypsum product added with Chloramine-T as a disinfectant will prevent cross-contamination from occurring and help in maintaining the sanitisation.

Extraoral implant retained prostheses have been shown to be a reliable therapy choice for maxillofacial rehabilitation. The clinical and laboratory steps for creating an auricular prosthesis are described in this case report. A 27-year-old male patient met with a road traffic accident, lost his left ear, and developed an ear deformity. The patient then sought out rehabilitation. Extraoral implants and Hader bar-and-clip retention were used to ensure that the auricular prosthesis was properly connected to the implant. The patient was satisfied with the prosthesis remarkable support, retention, and aesthetic abilities. Treatment success depends on factors like patient acceptability, aesthetics, compatibility, durability, and prosthetic considerations like material availability, processing ease, and ease of duplication that make the prosthesis look natural and give the patient social confidence.

Background: Disinfection of dental cast is very important because it can cause cross-infection from patients to clinicians and lab personnel. This study aimed to evaluate the effect of addition of 0.5% of chloramine-T as disinfectant in type III gypsum product on its setting time and abrasion resistance.  Objectives: 1. To evaluate the effect of Chloramine-T on setting time of type III gypsum product. 2.To evaluate the effect of Chloramine-T on abrasion resistance of type III gypsum product. 3. To compare the mentioned properties with control group of type III gypsum product without Chloramine-T. Methodology: This is an invitro study, sample size is 140. We will be testing for setting time with the help of Vicat needle apparatus and abrasion resistance will be tested with the help of two body wear testing apparatus. This study will be conducted under 4 groups: Group1- Control group for setting time, Group2- Experimental group for setting time, Group3- Control group for abrasion resistance, Group 4- Experimental group for abrasion resistance. Expected Result: It is expected that this study would result in forming a type III gypsum product incorporated with Chloramine-T, thus eliminating the need for any additional steps for disinfecting casts and ultimately preventing cross-infection. Conclusion: Incorporating Chloramine-T can be an efficient method of disinfecting gypsum without adversely affecting the product's mechanical and physical properties.