abutment teeth
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2022 ◽  
Vol 13 (1) ◽  
pp. 077-085
Author(s):  
Omotayo Adebola Oremosu ◽  
Modupeoluwa Omotunde Soroye

Background: There can be localized periodontal inflammation around abutment teeth of dentures as a result of plaque accumulation. This study assessed the periodontal changes of removable partial denture wearers compared to that of non-denture wearers. Methodology: Participants were recruited from the prosthodontic and restorative outpatient clinics of Lagos University Teaching Hospital. The self-administered questionnaire was used to collect information on socio-demographics, denture characteristics, periodontal changes and oral hygiene practice of participants. Periodontal status assessed included gingival inflammation, plaque accumulation and tooth mobility. Data was analyzed using SPSS version 20 (IBM SPSS Armonk, New York) and presented as frequencies and percentages. Test for significance was done using Chi-square statistics, and the level of statistical significance was set at P < 0.05. Results: A total of 96 participants between age 16 and 74years were recruited with mean age of 40±14.5years. There were 56 females and 40 males (F:M; 1.4:1). Fifty-four denture wearers and forty-two non-denture wearers were recruited into the study. Among participants wearing partial denture, 49(90.7%) had gingival inflammation; 45(91.8%) had mild inflammation compared to 4.8% participants who are non-denture wearers. 29(53.7%) denture wearers had fair oral hygiene while most 31(73.8%) non-denture wearers had excellent oral hygiene. Abutment teeth in denture wearers had tooth recession; mostly on the upper arch and also posteriorly. Conclusion: The periodontal inflammation, tooth recession and mobility in denture wearers were worse compared to non-denture wearers. Thus, they need to be motivated for more adequate oral hygiene practices and have regular recall system to monitor their periodontal health.


Author(s):  
Meisan Ali Bukhari ◽  
Ola Hisham Fatani ◽  
Juman Alhusain Alrifai ◽  
Safa Wajdi Kabli ◽  
Manar Ali Alhomood ◽  
...  

Utilizing cantilever bridges to perform fixed partial prostheses has been reported in the literature based on the increasing demands in this field to improve the outcomes and relieve extensive therapeutic approaches associated with complete oral rehabilitation. The current evidence indicates that cantilever bridges can effectively replace missing teeth with more favorable outcomes than removable partial dentures. However, evidence also shows that decreasing the number and size of cantilevered pontics and increasing abutment teeth are necessary to enhance the outcomes. Furthermore, if the occlusion is harmonious and stable, it has been demonstrated that cantilever bridges can be applied with the minimal periodontal ligament, which adds to its favorable outcomes. However, it should be noted that cantilever bridges are not applicable for all patients as it needs proper oral health status to be installed. Besides, it might also be associated with complications that may lead to failure. Therefore, further studies are still needed.


2021 ◽  
Vol 7 (4) ◽  
pp. 240-241
Author(s):  
Karin Hermana Neppelenbroek ◽  
Vinicius Carvalho Porto ◽  
Carolina Campos Sugio ◽  
Anna Clara Gurgel Gomes ◽  
Amanda Aparecida Maia Neves Garcia

A technique is described to facilitate impression making and safely obtain the definitive cast for removable partial dentures with long, retentive, or lone-standing abutment teeth. Firstly, the individualized stock tray receives a coating of melted wax. Next, the prepared teeth are impressed with irreversible hydrocolloid, and the set impression is removed from mouth. The mold is then poured conventionally and, after the gypsum has set, is immersed in hot water to soften the wax and allow removal of the tray. The impression material is carefully cut away with a scalpel blade to expose the cast. With these straightforward and easily made changes compared with the conventional technique, the risk of fracturing the definitive cast is minimized, especially when reproducing long retentive teeth. A dental technique is presented that uses wax to coat the impression tray to facilitate the passive displacement of the cast. This results in a straightforward and precise definitive cast for removable partial dentures.


2021 ◽  
Author(s):  
Ibrahim Alfahdawi

Abstract BackgroundThe esthetic repair of a removable partial appliance is a critical function that determines the success of the therapy. The most challenging challenge is to achieve While maintaining stability, retention, and protect teeth's health, optimal esthetics is achieved. Removable partial prosthesis is an odious therapeutic option that we still have to use in some circumstances and is a common procedure. However, these patients anticipate receiving a prosthesis. ObjectiveTo determine wrought wire clasp for removable partial dentures for esthetic. Materials and MethodsAfter taking impressions (primary and final) for the maxilla or the mandible of many patients, stone castings were pouring in class III (dental stone) using a 30 ml water to 100 g powder ratio. For the installation of prosthetic teeth, a uniform denture base plate wax template was made on each stone cast, and lingual clasps were inserted around the abutment teeth. Dental plaster is used to flake the lower piece of the traditional brass flasks (class II). The denture foundation was meticulously deflasked, after the curing cycle, the surplus is removed and the denture surface is polished. ResultsDentures that have been treated using this method have a high level of retention. Excellent aesthetics, make it more sanitary and dentures with the lingual clasps method are more comfortable for the patient. ConclusionDentures made with this procedure have better retention, a better esthetic, are good hygienic, and are high comfortable for the patient than dentures made using labial clasps.


2021 ◽  
Vol 15 (1) ◽  
pp. 626-635
Author(s):  
Mohamed Sharaf ◽  
Asharaf Eskander

Objective: To evaluate patients’ satisfaction, biting force measurement, and radiographic evaluation of abutment teeth of tooth implant-supported fixed partial denture, unilateral attachment, and conventional partial denture in mandibular distal extension cases. Materials and Methods: Twenty-four participants were selected according to the following criteria: participants with unilateral mandibular distal extension with last standing second premolar abutment; participants having abutments with sufficient occluso-gingival height and good periodontal condition. Participants were divided into the following three equal groups: participants of the implant group received fixed tooth implant-supported fixed partial dentures, attachment group participants received unilateral attachment removable partial dentures, and conventional group participants received conventional removable partial dentures. The evaluation included patient satisfaction using “OHIP14” questionnaires, biting force measurement, and radiographic evaluation of terminal abutments using the ANOVA test. Results: Participants of the implant group were mainly satisfied with their prosthesis than the attachment group, which is higher than the conventional. Regarding biting force measurement, there is a statistically significant difference (p < 0.05) between all groups, including the implant group and attachment group, as well as between attachment and conventional group (p < 0.05). The conventional group showed statistically significant (p < 0.05) highest mean bone loss, while there was no statistically significant difference between implant and attachment groups; both showed statistically significantly lower mean amounts of bone loss. Conclusion: The tooth implant-supported fixed prosthesis could be considered a superior line of treatment for managing distal extension cases. Unilateral attachment, which is considered an excellent alternative in the case of implant placement, is not recommended.


2021 ◽  
Vol 9 (09) ◽  
pp. 237-239
Author(s):  
Deepika U ◽  
◽  
Louis Solaman Simon ◽  
Sarita Das ◽  
Khwairakpam Monika ◽  
...  

The premature loss of primary teeth in mixed dentition commonly results in space loss. The spacelost is regained with the help of an appliance referred to as a space regainer. The appliance is of both removable and fixed type. This case report highlights the usage of a fixed KamatUday appliance (Triple-banded space regainer) in compromised abutment teeth.


2021 ◽  
Vol Special issue (3) ◽  
pp. 39-44
Author(s):  
Murod Toshpulatovich Safarov ◽  
◽  
Jaloladdin Xalimetov ◽  
Sardor Tolmasov

In order to achieve an optimal fit between the crown and the margin formed below the gingival margin, a good mapping of the space behind the margin is required. This can be accomplished in a variety of ways. At various stages, general dentists and prosthodontists apply gum retraction across the board on a daily basis. Gum retraction was first described in 1941 by Thompson. Today, a large assortment of retraction cords is presented on the material market. One of the main requirements forhigh-precision impressions is a clear display of the gingival sulcus around the abutment teeth. To obtain high-quality impressions, it is necessary to ensure the unimpeded position of the impression material in this area, which is ensured by retraction. With the generalized form of increased abrasion of the hard tissues of the teeth, all teeth or most of them are subject to restoration of the anatomical shape, therefore it is important to choose a retraction method that would not only allow obtaining ahigh-quality impression, but also minimize its negative effect. Since 1975, PubMed and Google Scholar have searched for studies on gingival tissue management prior to impression creation on fixed dentures. The conclusions were extracted and summarized by us. Gingival retraction methods are divided intomechanical, chemical or surgical types. This article discusses the various methods of gingival retraction for subsequent double-layer impressions.


2021 ◽  
Author(s):  
Srđan Poštić ◽  
Miloš Milošević ◽  
Taško Maneski ◽  
Goran Mladenović ◽  
Snežana Brković ◽  
...  

Abstract Background: Stereooptics method have been successfully used in biomechanical studies of models of dental and jaw bone tissues. The aim of this study was to investigate, by optical stereometry, the distribution of occlusal loads, depending on the functional deformities, on casts of a partially-edentulous lower jaw without copings as well as on the dedicated copings and the remaining solid tissue under the copings.Material and Methods: Precise measurement of strain and displacement of partially-edentulous mandibular control and experimental casts were provided by the digital image correlation method and software ARAMIS which determined the shape of the photographed object with high accuracy, its dimensions, field of three-dimensional (3D) movements, vector of distorted field and features of the biomaterial. Simulated loads were in the range between 0 and 1000 N.Results: Displacements and deformations of abutment teeth within the control cast of a partially-edentulous mandible were 0.48% for incisor without coping, 10.29% for canine without coping and 6.64% for premolar without coping, and within the experimental cast of a partially-edentulous mandible they were 0.29% for incisor with coping, 7.007% for canine with coping and 4.98% for premolar with coping.Conclusions: When loading the abutment teeth, the distribution of strain through the remaining tooth substance is specific and various, and abutment teeth covered by protective copings are more resistant to loads.


2021 ◽  
Vol 9 (D) ◽  
pp. 170-178
Author(s):  
Ragia Saad Mohamed Kotb ◽  
Ahmed Gamal Ahmed Hassan ◽  
Emad Mohamed Tolba M. Agamy ◽  
Gehan Fekry Mohamed

Objective: To evaluate and compare the effect of implant supported versus implant retained removable partial denture restoring Kennedy's class I cases on the supporting structures by measuring modified gingival index and probing depth for abutment teeth and implants. Subjects and Methods: Twelve patients; who had Kennedy class I mandibular partially edentulous ridge extending distal to the first or second premolar,   were selected from the outpatient clinic, Prosthodontics Department, Faculty of Dentistry, Minia University. The patients were classified into two equal groups; according to the implant superstructures either dome shaped abutment or ball and socket attachment.  Each Patient of both groups had two implants in second molar position (one in each side) and received removable partial denture of the same design. Patients were followed up for one year clinically. Group I: Six patients received RPD supported by dome shaped short abutments.  Group II six patients received RPD retained by ball and socket attachments. Results: Results revealed that, there was no statistically significant difference between the two groups regarding modified gingival index and probing depth around the abutment teeth and implant abutment. Conclusion:  The use of dome shaped abutment or ball and O-ring attachment have the same effect on gingival index and probing depth around natural abutments and implants in Kennedy class I mandibular situations.


Author(s):  
Stepanov V.A. ◽  
Shemonaev V.I. ◽  
Buyanov E.A. ◽  
Grachev D.V. ◽  
Parchomenko A.N. ◽  
...  

The article presents the results of evaluating the prototyping of metal-ceramic structures made by casting and selective laser sintering. To achieve this goal, 27 patients with fabricated metal-ceramic crowns and bridgeworks were examined. Two study groups were created. The first group included 14 patients for whom dental prosthesis frameworks were made by casting. The second group consisted of 13 people, for whom the frames of dentures were made by the method of selective laser sintering. The analysis of clinical effectiveness was carried out according to the following criteria: 1- precision of the felling of prosthesis frame to solid tissues of abutment teeth; 2- the condition of the marginal periodontium; 3- the integrity of the ceramic cladding. The results of the study showed that the precision to solid tooth tissues of metal-ceramic dental prostheses made by laser selective sintering is higher than of frames made by casting. In accordance to the second criteria the best results were also shown by the participants of the second group. No chipping of the ceramic veneer from the metal-ceramic denture frameworks made by laser selective sintering was found. Thus, dentures which frameworks are made by the method of selective laser sintering are characterized by a higher objective assessment of their precision to the solid tissues of the abutment teeth. Lesions of the marginal periodontium both inflammatory and dystrophic were less in the participants of the second group. The frequency of defects in the coating of metal-ceramic dentures was significantly lower in the case of fabrication frameworks by laser selective sintering.


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