Denture Prosthodontics Research Articles

The effect of digital impressions on the marginal seal of full ceramic crowns: A systemic Paper

Purpose: A group of three-dimensional imaging techniques have been introduced and these techniques have revolutionized dentistry in general and dental prosthodontics in particular. This has led to an increase in the accuracy of traditional restorations, in addition to providing a virtual framework that includes all treatment strategies, from designing and manufacturing restorations digitally. On the other hand, the challenges related to obtaining oral impressions using traditional methods were highlighted through the use of intraoral scanners (IOSs), as this technology is considered more comfortable and convenient for patients and doctors(1). Aim: This scientific paper aims to conduct a review of digital impression systems, their advantages, and disadvantages, as well as to evaluate the importance of the marginal seal of full ceramic crowns and to study the impact of digital impressions on them. Methodology: original scientintific papers on effect of digital impressions on the marginal seal of full ceramic crowns published in the MEDLINE. Results: A generation change occurs when the manufacturer upgrades an existing scanner (previous generation) in terms of both hardware and software, creating a new version (new generation model). The study concluded that new generations of intraoral scanner hardware and software can significantly increase the accuracy of the devices when it comes to scanning an entire dental arch, while all versions produce a clinically acceptable digital impression of a single abutment. Conclusion: There is no unison on what nominate a clinically acceptable maximum margin gap width. Furthermore, there is high widely between the systems and methodologies within the different studies which making it difficult to achieve direct comparison between the results of the academicals works. Based on the results of this systematic review all studies appear to indicate a predictable margin gap within or near clinically acceptable thresholds.

An assessment of clinical reception training using standard patient and dental simulator in prosthodontic dentistry for dental undergraduates: a historical control trial

BackgroundClinical reception training plays a crucial role in developing undergraduates’ clinical thinking and competence. The study aimed to evaluate the effectiveness of clinical reception training conducted by standard patients (SPs) and dental simulators among undergraduate students.Materials and methodsIn the first week of the internship, sixty-five 5th-year undergraduate students were divided into two groups: SP group, which received traditional theoretical training along with clinical reception training, and control group that only received traditional theoretical training. After 2 weeks and 8 weeks of training, all students were assessed with real patients by experienced prosthodontists using Mini-CEX assessment score sheets. Statistical analysis was performed using independent-samples T test or repeated-measures ANOVA (P < 0.05).ResultsThe total performance of interns in the SP group was superior to that of the control group, particularly in history taking, physical examination, and doctor-patient communication (P < 0.05). There were no significant differences between the two groups in terms of clinical judgement, medical record, and overall capabilities. Both groups showed improved results after 8 weeks compared to those obtained after 2 weeks.ConclusionIntegrating SPs and dental simulators into clinical reception training can effectively enhance undergraduate students’ ability in history taking, physical examination, and doctor-patient communication. This training method effectively aids in mastering the reception process and is recommended for wider implementation in dental undergraduate education.

Conventional Spacers in Removable Complete Denture Prosthodontics

Complete dentures offer the replacement of all missing teeth and surrounding tissues. Replacing the entire arch of missing teeth, the prosthesis is exclusively tissue-supported. Adapting a spacer during removable complete denture impression-making is one of the important steps. The success and failure of complete denture therapy are largely dependent upon the method by which the clinician records impressions. Many theories of impression have been proposed and the selective-pressure technique is one of the most widely used theories and has been used successfully. During the selective pressure technique, custom trays with different designs and materials spacers are used so that vulnerable tissues are relieved of undue stresses while stress-bearing areas are utilized properly. The current paper mainly describes some of the conventional wax spacers that may be used during impression making of removable complete denture prostheses.

Jaw relation recording and transferring: Using digital technology to augment its instruction in predoctoral prosthodontics

AbstractObjectivesThe study compared the learning effectiveness and teaching satisfaction of dental students from three teaching methods (traditional, digital, and combined pedagogy) for instructing jaw relation recording and transferring (JRRT).MethodsNote that, 276 fourth‐year undergraduate students from three classes were randomly divided into three groups to study JRRT in complete dentures using different teaching methods: traditional pedagogy group, digital pedagogy group, and combined digital and traditional pedagogy group. After the course, the learning effectiveness of basic knowledge and satisfaction questionnaire was administered to the three groups of participants using a quick response code for online answering. The questionnaire was customized by the teacher based on the content delivered to each group.ResultsThe data were analyzed using the Chi‐square test with Fisher's exact test. Both the digital and combined pedagogy groups showed a significant increase in basic knowledge test scores and higher satisfaction, compared to the traditional pedagogy group (p &lt; 0.01). Particularly, the participants from combined pedagogy showed better teaching satisfaction than the digital pedagogy group (p &lt; 0.001).ConclusionsThe use of digital technology in JRRT significantly enhanced students' learning effectiveness and teaching satisfaction.Clinical significanceThis educational innovation emphasizes digital technology to visualize vital concepts and operational intricacies related to JRRT. The findings have major implications for improving teaching methods in the field of prosthodontic dentistry.

Esthetic dentistry in prosthodontics including restorative materials-Review

All of us want and desire to look attractive. Esthetic dentistry in Prosthodontics is the branch that focuses on natural look of the teeth- to be beautiful. Esthetic is a Greek word 'estheticos' which is insightful. It is related to pleasure or good-looking. In 1950, this word was invented and esthetic revolution started in 1970s. This article deals with recent techniques and restorative materials used in Prosthodontics as in Rpd, Fpd, Maxillofacial, Implant, Smile like composites, ceramics, ormocers, cention N, zirconomers and in near future antibacterial composites. Ultimately it is the dentist's choice to mimic tooth structure and make it lifelike as much as possible.

PHOTO-ANALYSIS EVALUATION FOR DIMENSIONAL ACCURACY OF DIFFERENT IMPRESSION MATERIALS FOR COMPLETELY EDENTULOUS MAXILLARY RIDGES (CLINICAL STUDY)

Background: In complete denture prosthodontics, an edentulous arch precise reproduction through the secondary impression is necessary for denture retention and esthetics. Variance in the supporting oral structures nature and quality demands utilizing various accurate border molding and ultimate impression materials to attain successful prosthesis. Objectives: Tophoto-analytically evaluate and compare the dimensional accuracy of four dissimilar final maxillary completely edentulous impressions fabricated from two dissimilar border molding and secondary impression materials. Materials and Methods: Ten completely edentulous patients were nominated rendering to inclusion criteria and received complete dentures. For each patient, four dissimilar secondary maxillary impressions were constructed and divided into four groups owing to the border molding and impression materials utilized. All impressions were transferred into type IV dental stone, and casts were all snapped through a digital camera with fixed and repeatable stipulations. All photos attained were presented into computer software. Two dimensions were possessed for individual cast and compared. Results: An insignificant difference was apparent among all groups concerning parameters as P=0.06 and angles as P=0.053. Data were collected, tabulated, and statistically investigated utilizing Statistical Package for Scientific Studies16 ®, Graph pad Prism, and Windows Excel. Conclusion: However, recent elastomeric Putty and Medium rubber base impression materials almost possess equivalent means of dimensional accuracy in contrast with the conventional ones. But still, Greenstick compound and Zn/O Eugenol impression paste are insignificantly more dimensionally accurate in fabricating final impressions for completely edentulous patients.

Sustainable Dentistry: A Comprehensive Review of the Recycling Techniques for Gypsum Products in Prosthodontics.

This review explores the pivotal role of sustainable dentistry with a specific focus on the recycling of gypsum products in prosthodontics. As oral health practices increasingly impact the environment, the adoption of sustainable approaches becomes imperative. The review delves into the environmental challenges posed by gypsum waste in prosthodontics and examines current recycling techniques, presenting key findings and successful case studies. The call to action is directed towards the dental community, urging practitioners, educators, and policymakers to prioritize sustainable practices, encompassing responsible waste management and the incorporation of eco-friendly materials. Looking to the future, the review envisions a promising landscape for sustainable dentistry in prosthodontics, propelled by emerging technologies and a collective commitment to environmentally conscious oral healthcare. Ultimately, this review serves as a catalyst for positive change, advocating for a transformative shift toward sustainability within the dental community.

Modular training model for education of students in restorative and prosthodontic dentistry.

At the moment, no commercial model solution is available for the individualisation of the dentition depending on the clinical case scenario. Furthermore, the realistic training of most restorative and prosthodontic procedures on a single dental study model is not possible. The aim of this study was the creation of a new training model to fill this gap. Complete upper and lower jaw models were created based on existing scans and radiological data from a patient. All components for 100 complete models and 1128 teeth for the training were produced with a SLA-printer. Overall, 94 voluntary students attending the first and second preclinical course in prosthodontics tested the functionality of the model with three different tooth types against a standard dental study model and real teeth. After the training, the model was rated in a questionnaire. The production of the models and teeth was feasible. The overall rating of the different teeth was worse for type I (Ø 3.6 ± 1.1), significantly better for type II (Ø 2.5 ± 1.0) and type III (Ø 2.4 ± 1.0) than a standard typodont tooth (Ø 2.7 ± 1.1). The new model was rated significantly better overall (Ø 2.6 ± 1.0) than the standard training model (Ø 3.0 ± 1.1). The aim of this study was fulfilled. A superior training model was created with equivalent and better tooth types. The new teeth were outstanding in terms of cost-efficiency, appearance and feeling during preparation.

Current Trends In Complete Denture Education In Undergraduate Dental Colleges Of Pakistan.

To determine the current trends in complete denture education in undergraduate dental colleges. The survey-based study was conducted in April and May 2020 at undergraduate dental colleges of Pakistan, and comprised heads of the Prosthodontics Department at all dental colleges across Pakistan having at least one batch of final year dental students. Data was collected using an online predesigned questionnaire that explored theoretical and practical teaching patterns of complete denture prosthodontics in the undergraduate years, and the materials and practices of students when constructing complete dentures in the clinics. The participants were given the option of choosing more than one option where needed. Data was analysed using SPSS 23. Of the 49 subjects approached, 40(81.6%) returned the forms duly filled; 11(27.5%) from public-sector institutions and 29(72.5%) from the private sector. There were 26(65%) institutions which required that their undergraduate students fabricate 2-4 conventional complete dentures. In all 40(100%) colleges, faculty gave live clinical demonstrations before students fabricated conventional complete dentures in the outpatient departments. Teaching strategy included small group discussions in 25(62.5%) institutions. Green stick 40(100%), zinc oxide eugenol 40(100%) and impression compound 39(97.2%) were the materials of choice for various steps of impression making. In all the 40(100%) institutions, students fabricated conventional complete dentures during their prosthodontics rotation. Immediate, copy and overdentures were constructed by students in 8(20%), 3(7.5%) and 8(20%) institutions, respectively. Majority of the dental schools used similar impression materials and techniques for fabricating conventional complete dentures. Didactic teaching of conventional and unconventional complete dentures was being carried out at a huge majority of the dental institutions studied.

Tongue training technique for guiding the mandible in establishing horizontal jaw relation in edentulous patients.

Edentulous patients have poor neuromuscular proprioception to guide the mandible to the desirable horizontal relation. Horizontal jaw relation is a complex relationship in which variation may occur in vertical, anteroposterior and mediolateral directions. The aim of this study was to train the tongue and bring the mandible to centric relation in geriatric edentulous cases. Protrude the tongue to the maximum length and retract back to centric relation, move the tongue on the left side beyond the angle of the mouth and bringing back to centric relation, move the tongue on the right and left side beyond the angle of the mouth and bringing back to centric relation, then the tongue should move upwards and touches the marginal tubercle of upper lip and bringing back to centric relation and move the tongue upward and posteriorly to touch the posterior part of the hard palate of the maxilla and swallowing. Edentulous patient can successfully move the mandible in centric relation after training the tongue. The present technique is useful for establishment of horizontal jaw relation in edentulous cases using tongue training exercise in Prosthodontic dentistry.

Enamel island technique and nonrigid connectors

Rationale: Fixed denture prosthodontics is a commonly practiced treatment option for rehabilitation of partially edentulous clinical conditions. Certain local and systemic factors contraindicate utilization of implant therapy. Long edentulous span, pier abutment, distal abutments, and intersegment prosthesis extending from one sextant to another are a few challenging situations due to altered biomechanics and require modification in treatment planning to achieve optimum outcome. Patient Concerns: A 37-year-old male patient reported with difficulty in mastication due to partially edentulous mandibular arch. Diagnosis: Based on clinical features, a diagnosis of Class II partially edentulous mandibular arch was made. Intervention: Rehabilitation of partially edentulous mandibular arch was done using customized semiprecision attachment. Outcomes: Recall appointments were scheduled at 48 h, 1 week, 1 month, and 3 months and the patient was found to be satisfied with the prosthesis. Lessons: Semiprecision attachment is a viable modality that is used in rehabilitation of pier abutment situations. It protects the abutment from unwanted leverage forces and ensures longevity of the restoration.

Application of refined nursing management in complete denture prosthodontics for elderly patients with low and flat alveolar ridge

Application of refined nursing management in complete denture prosthodontics for elderly patients with low and flat alveolar ridge

Preprinted anterior tooth guides used to assist complete denture tooth arrangement

Although many advancements have been made in preventive and reconstructive dentistry, treating edentulism still remains a challenge.1 One of the challenges in complete denture prosthodontics is communicating information regarding the optimal shape and position of the maxillary anterior teeth to the dental laboratory technician.

3-D PRINTING: A WAY AHEAD, REVIEW

3D printing is a revolutionary concept based on additive process. It offers multifaceted applications for dentistry in general and prosthodontics in particular. A myriad of advantages like reproducibility, accuracy, customisation, and ability to create complex parts with ease in less time have provided improved patient treatment options and compliance. This article presents an overview on currently available technologies and their utilisation.

Association of Cadaveric Factors with the Degree and Region of Discoloration on Pink Teeth: An Approach to Serial Cases

The pink teeth phenomenon has been observed in cases of hanging and drowning, but the relationship of this phenomenon with cause of death has not been positively affirmed. To date, teeth with a pinkish tone have been simply regarded as pink teeth. However, we speculated that classification and evaluation of the degree and region of discoloration with reference to how color is classified in prosthodontic dentistry may produce novel findings regarding the pink teeth phenomenon. Therefore, we classified the degree and region of discoloration on teeth into three grades and attempted to evaluate the relationship of grade with various cadaveric factors in 68 cases of pink teeth. The degree and region scores of discoloration did not show significant differences in terms of sex, age, cause of death, and place of discovery, but the degree of discoloration in terms of time after death showed a significant increase at 6 months (p &lt; 0.01) and a significant decrease after 7 months (p &lt; 0.05), while the region score also showed a significant decrease after 7 months. Furthermore, in 18 cases of drowning, the degree of discoloration significantly increased with time after death (p &lt; 0.01). Thus, it was clarified that time after death was most strongly related to the pink teeth phenomenon, suggesting cadaveric decomposition may affect the occurrence of pink teeth. Further investigation in cases of early postmortem changes would be required to determine whether pink teeth in putrefactive cadavers have utility in medico–legal assessments.

Biomedical waste management in prosthodontic dentistry

Biomedical waste (BMW) is a global issue today. Common producers of biomedical waste include hospitals, health clinics, nursing homes, medical research laboratories, offices of physicians, dentists, and veterinarians, home health care, and funeral homes. It must be properly managed to protect the general public, specifically healthcare and sanitation workers who are regularly exposed to biomedical waste as an occupational hazard. The materials used in prosthodontic dentistry are large in numbers. They are Impression Materials, Gypsum Products, Cements. And it was segregation according to colour code. If we want to protect our environment and health of community we must sensitize ourselves to this important issue not only in the interest of health managers but also in the interest of community.

Base Metal Denture Bases - Clinical indications

It has been more than eight decades since the introduction of polymethylmethacrylate (PMMA) in prosthetic dentistry. Despite so many advances in material science, the use of PMMA is unabated. Its ability to be molded into desired shape and biocompatibility, are significant for its success. Certain clinical conditions do however contraindicate its uses in prosthesis, and pave way for base metal alloy denture bases. These conditions are so common, yet they are missed clinically by even most astute clinicians. This case series in the form of multiple case reports provides the reader a glance into the clinical indications for metal denture bases in complete denture prosthodontics. Each case has been explained on the basis of its particular indication. The advantages and disadvantages of metal denture bases in such situations has been discussed. A case of menopause, sorption related denture changes, need for improving oral stereognostic ability and cases where poor adaptation of denture base acrylic is inevitable are key description of this article.

Adhesive Dentistry in Prosthodontics: The key to open minimal intervention and full-digital treatment.

Adhesive Dentistry in Prosthodontics: The key to open minimal intervention and full-digital treatment.

ATTITUDE OF CLINICIANS TOWARDS CLINICAL DECISION-MAKING IN PROSTHODONTICS

Objective: To assess the attitude of resident and consultant Prosthodontists towards clinical decision-making in complete denture prosthodontics&#x0D; Study Design: A cross-sectional study.&#x0D; Place and Duration of Study: Armed Forces Institute of Dentistry, Rawalpindi, from Nov 2019 to Jan 2020.&#x0D; Methodology: Fifty trainee and consultant prosthodontists from all over the country were included in the study. A questionnaire consisting of 10 questions aimed at assessing the approach towards clinical decision-making in complete denture prosthodontics was circulated among the study subjects using Google Forms. Data was analyzed using SPSS version 24.&#x0D; Results: Around 20 (40%) prosthodontists regarded patient’s personal values and preferences to be “very important” in clinical decision-making in contrast to their own values. Most of the clinicians 47 (94%) believed their patients were quite satisfied with them and around 31 (62%) prosthodontists believed that “choice of the best treatment results from negotiation between patients and clinicians after they have shared technical information as well as their values and preferences about the options”. No significant difference was observed in choice of response between males and females or between prosthodontists with varying clinical experience for any of the questions asked (p&gt;0.05).&#x0D; Conclusion: Prosthodontists participating in the present study demonstrated a positive attitude towards shared decisionmaking in complete denture prosthodontics. No differences were observed between males and females in terms of attitude towards shared decision-making practices.

Current trends in removable partial prosthodontics education in dental colleges of Pakistan.

The objective of this study was to investigate the current trends in undergraduate teaching of removable partial prosthodontics in various dental colleges of Pakistan. A cross-sectional study was conducted in which a questionnaire was sent by email to head of Prosthodontics department of thirty-one dental institutes of Pakistan. The survey included multiple questions regarding current trends in removable partial prosthodontics education in undergraduate dental colleges. Out of thirty-one questionnaires, twenty-six were completely filled and returned. In 19 (73%) dental colleges, removable partial denture is taught over a period of at least two years of undergraduate education. Students of only six dental colleges fabricate 10-12 removable partial dentures during their Prosthodontic rotation. Lectures and live clinical demonstration for construction of removable acrylic dentures are reported to be carried out in all the dental schools. Simple hinge articulator is the articulator of choice in 22 (84.6%) colleges. Even though twenty-four out of twenty-six colleges (92.3%) teach fabrication of cast partial dentures in lectures, none of the student fabricate these dentures during their Prosthodontic rotation. This survey is the first to comprehensively report the teaching practices of removable denture Prosthodontics in undergraduate dental colleges of Pakistan. Faculty of all twenty-six colleges give clinical demonstrations of acrylic partial denture construction before students start working in the dental OPD. Most of the dental colleges report use of similar impression materials and techniques in removable partial denture fabrication. More than 90% of dental colleges teach cast partial dentures theoretically, but their construction is grossly neglected in all the dental colleges. It is important that this skill is taught and practised by students in order to have the necessary skill set, so they can provide comprehensive treatment to partially dentate patients once they graduate.