Journal of Nepalese Prosthodontic Society <p>The Journal of Nepalese Prosthodontic Society (JNPS) is the biannual official publication of Nepalese Prosthodontic Society and is devoted to the field of prosthetic dentistry.</p> en-US <p class="Default">© The authors</p> (Prof.Dr. Suraj R B Mathema) (Sioux Cumming) Tue, 01 Nov 2022 10:57:40 +0000 OJS 60 Pattern of occlusal contacts in eccentric position of mandible in dental students <p><strong>Introduction: </strong>Canine protection and group function are the two stand out occlusal schemes observed during laterotrusive movement of the mandible. The study aims to evaluate the frequency of these occlusal schemes in Nepalese dental students.</p> <p><strong>Materials </strong>and methods: A cross-sectional study was conducted among dental students in People’s Dental College and Hospital, Kathmandu, Nepal after the ethical approval from PDCH-IRC. Sixty four undergraduate students aged 21-30 years, were examined for the occlusal contact patterns in lateral mandibular movements using 12μm shim stock. The data were analyzed using SPSS software (version 21)</p> <p><strong>Result: </strong>On 1mm laterotrusive position on mandible, 43 subjects (67%) showed group function, 15 subjects (24%) canine guided and 6 subjects (9%) non specified occlusion. On 3mm laterotrusive movement, 31(48%) subjects showed group function and 27 subjects (42%) showed canine guided occlusal scheme. The most frequent mediotrusive contact was the second molar followed by the first molars during both 1mm and in 3mm excursion</p> <p><strong>Conclusion: </strong>Majority of occlusal schemes of the study population were group function followed by canine protection and non specified occlusion. Canine protected occlusion scheme was increased on 3mm lateral excursion. Most of mediotrusive side contact seen on 2nd molar on 1mm.</p> K. Shrestha, P. Shrestha, B. Maskey, R. Pradhan, S. Poudel Copyright (c) 2021 K. Shrestha, P. Shrestha, B. Maskey, R. Pradhan, S. Poudel Fri, 31 Dec 2021 00:00:00 +0000 Assessment of Self Disinfecting Capacity and Dimensional Stability of Irreversible Hydrocolloid Impression Material Mixed With Different Concentrations of Chlorhexidine Solution-An Invitro Study <p><strong>Introduction: </strong>Impression materials are used to record the anatomical topography of oral tissues. Irreversible hydrocolloid is an impression material routinely used in dentistry. However, it retains bacteria, 2 to 3 times higher than other impression material. Spraying and immersion technique has been employed for disinfection of irreversible hydrocolloid with varying degree of success. Thus the need of impression material that has self-disinfecting capacity seems to be very important to have infection control in dentistry.</p> <p><strong>Materials and Methods</strong>: This invitro study was done in two parts. Assessment of self-disinfecting capacity of irreversible hydrocolloid impression material mixed with different concentrations of chlorhexidine solution and dimensional stability of irreversible hydrocolloid impression material mixed with different concentrations of chlorhexidine solution. For assessment of self-disinfecting capacity, irreversible hydrocolloid was mixed with various concentrations of chlorhexidine (0.05%, 0.1%, 0.2%) and distilled water. Total 64 culture plates were prepared, n=16 for each group of microorganisms (E. coli, S. aureus, Pseudomonas, Klebsiella). Inhibition zones were measured for each microorganism. For dimensional stability, the specimens were divided into four groups similar to specimen for self-disinfecting ability. Total 56 samples were prepared, n=14 for each group. Interpretation (IP), Mesiodistal (MD), Buccolingual (BL), Occlusogingival (OG) dimensions were measured by digital Vernier caliper. One-way analysis of variance was done for assessment of self-disinfecting capacity and for dimensional stability. Dunnett comparison test was performed to test the significance between test and control. P value was calculated under the predetermined level of significance (0.05).</p> <p><strong>Results: </strong>Zones of inhibition were observed around test specimens (groups 0.05, 0.1, 0.2), but not around control specimen (Group d/w). There was a significant difference in the mean diameters of the inhibition zones between test groups and control which was statistically highly significant (p &lt; 0.001). In the test for dimensional stability, no significant differences were detected among groups for all the measured dimensions (p&gt; 0.05).</p> <p><strong>Conclusion: </strong>Irreversible hydrocolloid impression material mixed with chlorhexidine exhibits varying degrees of self-disinfecting activity without influencing the dimensional stability of set material. </p> B. Pradhan, S. P. Joshi, S. Sah, A. Verma Copyright (c) 2021 B. Pradhan, S. P. Joshi, S. Sah, A. Verma Fri, 31 Dec 2021 00:00:00 +0000 Relationship of Interalar and Intercommissural Distance with the Width of Maxillary Anterior Teeth <p><strong>Introduction: </strong>The anterior teeth are primarily selected to satisfy esthetics. Their selection requires the dentist’s artistic skill and scientific knowledge. This clinical study was conducted to explore the relationship of interalar and intercommissural distance with the combined width of maxillary anterior teeth.</p> <p><strong>Materials and Methods: </strong>Measurements of the parameters was made using a Digital caliper. The patient was seated up right position and asked to look straight; the intercommisural and interalar width were measured between commissures and ala without applying pressure. The combined width of maxillary anteriors form the distal surface of left and right canines were measured with a dental floss, which was then sectioned and measured. Each parameter was measured three times and the average value was computed and recorded.</p> <p><strong>Results: </strong>Mean Interalar, intercommisural and intercanine distance were 34.72 mm, 48.9 mm and 49.61 mm respectively. Statistical analysis revealed a highly significant difference between the interalar width, intercommisural width and intercanine width of male and female respectively. Spearman’s rho analysis showed a highly significant correlation between Inter canine and both inter alar width (r=0.098, p &lt;0.04) and Intercommisural width (r=0.234, p &lt;0.05). Similarly, Spearman’s rho analysis in both sexes showed a highly significant correlation between intercanine and intercommisural width however such correlation was not seen between intercanine and inter alar width.</p> <p><strong>Conclusions: </strong>This study concluded that there is significant correlation between interalar and intercommissural width with the combined width of maxillary anterior teeth. The inter alar and inter commissural width may be a useful guideline for the selection and replacement of maxillary anterior artificial teeth. </p> B. Ghimire, S. Dhital, P. Neupane Copyright (c) 2021 B. Ghimire, S. Dhital, P. Neupane Fri, 31 Dec 2021 00:00:00 +0000 The Knowledge, Attitude and Practice of Fixed Prosthodontics: A Survey Among Dental Practitioners in Eastern Nepal <p><strong>Introduction: </strong>The aim of the study is to evaluate the knowledge, attitude and fixed prosthodontics practice guidelines amongst dental practitioners of Eastern part of Nepal.</p> <p><strong>Materials and Methods: </strong>A descriptive cross‑sectional study was done among dental practitioners of Eastern Part of Nepal Practicing in Private Clinics and Dental Schools. A total of 250 dentists were selected randomly from private and public sectors and dental schools. A survey was conducted through a printed and online standard questionnaire with 18 open as well as multiple choice questions delivered to dental practitioners. All data were collected and coded, the statistical analysis was done using SPSS statistical software package. Descriptive statistics were used for data analysis.</p> <p><strong>Result: </strong>The study showed that 167 (66.8%) were males while 83 (33.2%) were females. 80 (32%) of dentists were practicing crown and bridge for 1‑3 years, 88 (35.2%) of dentists were practicing crown and bridge for 4‑10 years, 38 (15.2%) of dentist were practicing for 11‑15 years while 44 (17.6%) of them were practicing for more than 16 years. Most of respondents 175 (70%) worked in private clinics. 90(36%) of participants fabricated study models before commencing fixed prosthodontic treatment. 190(76%) of participants always used radiographs for abutment tooth evaluation. Vitality test for restored abutments were always done by 115 (46%) respondents. Majority of respondents 200 (80%) were using high-speed hand pieces and diamond bur during preparation 130 (52%) While preparing of teeth for dental prosthesis. additional cured silicon was mostly used by most of the practitioners 110 (44%) for making final impression with a Putty and wash techniques 183 (73.2%).165 (66%) participants used wax for bite registration, 100 (40%) of respondents always used retraction cord and 08(43.2%) practitioners never give provisional crown and bridges. Both written prescriptions and verbal communications were used during communication between dentist and lab by 175 (70%) respondents.</p> <p><strong>Conclusion: </strong>The dental practitioners of Eastern part of Nepal displayed acceptable level of knowledge and awareness regarding fixed prosthodontics practice. However, to further enhance efficiency and performance, an effort should be made to update the knowledge by conducting CDE on recent advances in dentistry and dental practices. </p> A. Rathi, R. K. Jha, A. Bhochhibhoya, M. Guragain Copyright (c) 2021 A. Rathi, R. K. Jha, A. Bhochhibhoya, M. Guragain Fri, 31 Dec 2021 00:00:00 +0000 Editorial Vol.4(2) <p>Things have been difficult for the past year with the global pandemic. Still, with a better understanding of the disease and efficient management at the government and public level, we look better prepared and slowly returning to normalcy. We are finally open to all forms of treatment, of course with caution. Cheers!!</p> <p>On behalf of our editorial team, I am glad to present the Journal of Nepalese Prosthodontic Society (JNPS) Volume 4, Number 2. The journal established in 2018 has published 8 issues, including this latest offering. Through these initial years of our publication, we hope we have been able to provide a platform to share innovation, research, and ideas not only with our fellow prosthodontists but with our budding undergraduates and postgraduate students likewise.</p> <p>Finally, I would like to thank the editors, anonymous reviewers, our valuable readers, and contributors/authors for their continuous support and encouragement.</p> <p><br />Thank you.<br />Dr. Siddharth Dixit<br />Editor in Chief</p> Siddharth Dixit Copyright (c) 2021 Siddharth Dixit Fri, 31 Dec 2021 00:00:00 +0000 Prosthetic Rehabilitation of Patient with Total Maxillectomy with Hollow Bulb Closed Obturator and Cast Partial Denture: A Clinical Report <p>Total maxillectomy is the complete resection of one of the two maxillae or resection to the midline. Surgical intervention creates communication between the oral cavity, nasal cavity and maxillary sinus. Postsurgical maxillary defects predispose the patient to hypernasal speech, leakage of food bolus and liquids into the nasal cavity, impaired mastication and various degrees of cosmetic deformities. Prosthodontic rehabilitation with obturator prosthesis restores the missing structures and acts as a barrier between the communications among the various cavities. Hollow bulb obturator with the maximum coverage of the defect aids in retention, stability, support with improved speech resonance and reduced weight on the unsupported side.</p> <p>This clinical report presents the prosthetic management of a patient having total maxillectomy on left side with definitive hollow bulb closed obturator and cast partial denture on the maxilla.</p> G. Neupane, B. Sapkota Copyright (c) 2021 G. Neupane, B. Sapkota Fri, 31 Dec 2021 00:00:00 +0000 Empirical Impression - An Efficient Alternative for Ocular Rehabilitation: A Case Report <p>Ocular prostheses have been used since a very long time ago. Success of ocular prosthesis depends upon its adaptation with anopthalmic socket which is best determined by ocular impressions. Various impression techniques and materials have been described in the literature. This case report highlights the use of empirical impression technique for fabrication of ocular prosthesis of a 65-year old male who had undergone enucleation surgery of left eye. The empirical impression technique involves: first a close visual examination of patient’s socket, then a wax shell is designed and modified empirically to a shape that fits the socket; second, an impression is made of the socket, using this wax shell as an impression tray. Reduced treatment time and increased simplicity are the primary advantages of this method. This technique of impression making is not feasible in cases with highly irregular sockets.</p> C. P. Patel, P. Suwal, P. K. Parajuli, A. Sharma, B. B. Basnet Copyright (c) 2021 C. P. Patel, P. Suwal, P. K. Parajuli, A. Sharma, B. B. Basnet Fri, 31 Dec 2021 00:00:00 +0000 Implant Placement in Site of Plexiform Ameloblastoma After Dredging. A Clinical Report <p>Ameloblastoma is a benign but aggressive neoplasm of odontogenic origin with a predilection of the mandible. It can be of various types based on histopathological features. Follicular and plexiform ameloblastoma are the most common types of ameloblastoma. There are various methods for management of ameloblastoma amongst which dredging is considered a conservative surgical procedure which involves enucleation or deflation and enucleation and repeated removal of scar tissues to accelerate new bone formation. Placement of implant at the site of newly regenerated bone after dredging is completed with repeated examination of tumour mass histopathology. This report documents the placement of implant in newly formed mature bone after successful dredging of plexiform ameloblastoma</p> S. Regmi, S. P. Joshi, P. Shrestha, S. K. Sah, A. Verma, G. Karna Copyright (c) 2021 S. Regmi, S. P. Joshi, P. Shrestha, S. K. Sah, A. Verma, G. Karna Fri, 31 Dec 2021 00:00:00 +0000 Rehabilitation of peg shaped lateral incisors with ceramic veneer: A case report <p>The most common discrepancy concerning tooth size is the presence of peg shaped lateral incisors, which can cause teeth with reduced size, anterior diastema and consequently an unpleasant smile. The development of adhesive dentistry and ceramic veneers allowed all ceramic bonded restorations to become an esthetic, durable and functional approach to reestablish the smile harmony.</p> <p>The purpose of this clinical report is to describe a conservative treatment approach using ceramic veneer to restore an esthetic disharmony caused by bilateral peg shaped lateral incisors.</p> M. Shrestha, S. P. Joshi, P. Shrestha, S. Sah, A. Verma Copyright (c) 2021 M. Shrestha, S. P. Joshi, P. Shrestha, S. Sah, A. Verma Fri, 31 Dec 2021 00:00:00 +0000 Minimise Weight, Increase Retention: Hollow Denture - A Case Report <p>The increased inter-ridge space due to resorption of residual ridge and long upper lip length makes the prosthetic rehabilitation of such patient a great challenge for a prosthodontist. Retention and stability of complete denture in cases of residual ridge resorption is usually reduced because of minimised denture bearing area. The maxillary denture fabricated in such patients are bulky in nature which further compromise its retention. So, in this case report a simplified technique is described for construction of hollow maxillary denture which being light in weight further improves denture retention.</p> A. Rai, B. Kharel, P. Suwal, P. K. Parajuli, I. Limbu, B. B. Basnet Copyright (c) 2021 A. Rai, B. Kharel, P. Suwal, P. K. Parajuli, I. Limbu, B. B. Basnet Fri, 31 Dec 2021 00:00:00 +0000