scholarly journals Comparison in Bone Density Changes for Two Different Designs in Treatment of Mandibular Bilateral Free End Saddle with Osseointegrated Implants

2020 ◽  
Vol 8 (D) ◽  
pp. 229-234
Author(s):  
Seham Ali El-Sayed Sabra ◽  
Gehan Fekry ◽  
Emad Agamy
Keyword(s):  
Bone Density ◽  
Radiographic Evaluation ◽  
Time Intervals ◽  
Removable Partial Denture ◽  
Partial Denture ◽  
Second Molar ◽  
Osseointegrated Implants ◽  
Group I ◽  
Abutment Teeth

AIM: The aim of this study is to evaluate two different designs in mandibular bilateral free end saddle cases with the use of osseointegrated implants. The designs evaluated were OT-strategy extracoronal attachment and bar attachment. Radiographic evaluation was carried out for implants and natural abutment in terms of bone density. MATERIALS AND METHODS: This study was conducted on 10 patients with bilateral distal extension area with missing molars bilaterally; the patients were divided into two groups after implant insertion on the second molar area. Group I: Patients received extracoronal attachment distal to the last natural abutment teeth with the construction of metallic removable partial denture (RPD). Group II: Patients received bar attachment with the construction of metallic RPD. Both groups have the maxillary arch edentulous with the construction of complete maxillary dentures within our study. Radiographic evaluation for bone density was done for both groups at the time of prosthesis insertion, 3, 6, and 9 months later. A comparison between the two groups regarding each follow-up period was performed by an independent t-test. RESULTS: Although there were some differences between both designs in the 1st-time intervals, generally, there were no significant differences between the two designs all over the 3-time intervals. CONCLUSION: From the results of this study, it was concluded that: Although there were no significant differences between both designs, bar-attachment showed better results which should be confirmed with more future researches.

scholarly journals Clinical Evaluation of the Effect of Implant-Supported and Implant Retained Distal Extension Removable Partial Dentures on the Supporting Structures

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
Keyword(s):  
Class I ◽  
Gingival Index ◽  
Removable Partial Denture ◽  
Partial Denture ◽  
Second Molar ◽  
Group I ◽  
Probing Depth ◽  
Significant Difference ◽  
Abutment Teeth ◽  
Supporting Structures

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.

scholarly journals Evaluation of Biting Force of New Design of Extracoronal Castable Precision Attachment versus Conventional Partial Denture for Treatment of Unilateral Mandibular Distal Extension Area: A Randomized Controlled Trial

2020 ◽  
Vol 8 (D) ◽  
pp. 23-28
Author(s):  
Mohamed Afify ◽  
M. Helmy ◽  
N. Abbas
Keyword(s):  
Controlled Trial ◽  
Removable Partial Denture ◽  
Partial Denture ◽  
Masticatory Efficiency ◽  
Group I ◽  
Group Ii ◽  
Treatment Summary ◽  
Post Hoc ◽  
Distal Extension

PURPOSE: The aim of this study was to evaluate biting force of patients with unilateral mandibular distal extension area treated with two different designs of the removable partial denture (RPD), conventional RPD, and new design of extracoronal castable precision attachment (OT Unilateral attachment). MATERIALS AND METHODS: This study was conducted on 16 patients with unilateral mandibular distal extension area with the second premolar is the last abutment teeth. The patients were divided into two equal groups, Group I received conventional RPD, which provides cross arch stabilization and a double Aker clasp was fabricated. Group II received new design of extracoronal castable precision attachment (OT Unilateral attachment). Evaluation of biting force by loadstar sensor, patients of both groups were evaluated at the time of prosthesis insertion, 3, 6, and 1 year later. Statistical analysis performing one-way analysis of variance followed by Tukey’s post hoc test to compare between all follow-up periods within each group, comparison between two groups regarding each follow-up period was performed by independent t-test. RESULTS: Both treatments yielded better after-treatment summary when compared with the baseline; however, better results were obtained and showed a statistically significant increase in Group II (OT unilateral design), especially after 3, 6 months, and 1 year later. CONCLUSION: From the results of this study, it was concluded that: It is preferable to use the new design of extracoronal castable precision attachment (OT unilateral) being simpler, more comfortable to the patients and give high masticatory efficiency in the form of biting force than conventional RPD.  

scholarly journals Comparison between Acetal Resin and Cobalt-chromium Removable Partial Denture Clasps: Effect on Abutment Teeth Supporting Structures

2011 ◽  
Vol 1 (3) ◽  
pp. 147-154 ◽  
Author(s):  
Tarek Mohamed ◽  
Osama Abdulmoneam Baraka ◽  
Magdy Mostafa Badawy
Keyword(s):  
Bone Density ◽  
T Test ◽  
Cobalt Chromium ◽  
Removable Partial Denture ◽  
Partial Denture ◽  
Attachment Loss ◽  
Abutment Teeth ◽  
Crevicular Fluid ◽  
Bone Height ◽  
Supporting Structures

ABSTRACT Statement of problem Acetal resin has been introduced as an esthetic partial denture clasp material. However, the effects of these clasps on the abutment teeth supporting structures were not clear. Purpose To evaluate the effects of acetal resin clasps on the abutment teeth supporting structures as compared to cobalt-chromium clasps. Materials and methods Twenty patients, 12 males and 8 females, with Kennedy class III modification I partially edentulous maxilla and dentulous mandibles were selected for this study. Patients were divided into two equal groups; group 1 received maxillary cobalt-chromium partial denture frameworks with acetal resin Akers clasps. Group 2 received maxillary partial denture with cobalt-chromium frameworks and Akers cobalt-chromium clasps. Crevicular fluid, epithelial attachment loss, and bone height and density of the abutment teeth were evaluated at partial denture insertion and after 6 and 12 months. Paired t-test was used at p ≤ 0.05 to assess the changes in the above parameters in each group. Student t-test was used to compare between the two groups. Results Crevicular fluid measurements were significantly higher in the first group than that in the second group. There were no differences in epithelial attachment loss between the two groups. There were significantly higher reductions in the bone height and in the bone density in the second group than that in the first group. Conclusion Acetal resin clasps were superior to cobalt-chromium clasps as produced fewer reductions in bone height and in bone density around the abutment teeth inspite of produced increase in the crevicular fluid. Clinical implications Since there were lesser reductions in bone height and in bone density around acetal resin clasp abutments, it could be used successfully to retain partial dentures. However, meticulous oral hygiene and proper insertion and removal of partial denture with acetal resin clasps were required to decrease gingival inflammation and crevicular fluid amount.

scholarly journals Comparative analysis of unilateral removable partial denture and classical removable partial denture by using finite element method

2010 ◽  
Vol 138 (11-12) ◽  
pp. 706-713 ◽  
Author(s):  
Katarina Radovic ◽  
Aleksandra Cairovic ◽  
Aleksandar Todorovic ◽  
Ivica Stancic ◽  
Aleksandar Grbovic
Keyword(s):  
Extreme Values ◽  
High Stress ◽  
3D Models ◽  
Removable Partial Denture ◽  
Partial Denture ◽  
Second Molar ◽  
Physiological Limits ◽  
Abutment Teeth ◽  
Applied Forces ◽  
Physiological Values

Introduction. Various mobile devices are used in the therapy of unilateral free-end saddle. Unilateral dentures with precise connectivity elements are not used frequently. In this paper the problem of applying and functionality of unilateral freeend saddle denture without major connector was taken into consideration. Objective. The aim was to analyze and compare a unilateral RPD (removable partial denture) and a classical RPD by calculating and analyzing stresses under different loads. Methods. 3D models of unilateral removable partial denture and classical removable partial denture with casted clasps were made by using computer program CATIA V5 (abutment teeth, canine and first premolar, with crowns and abutment tissues were also made). The models were built in full-scale. Stress analyses for both models were performed by applying a force of 300 N on the second premolar, a force of 500 N on the first molar and a force of 700 N on the second molar. Results. The Fault Model Extractor (FME) analysis and calculation showed the complete behavior of unilateral removable partial denture and abutments (canine and first premolar), as well as the behavior of RPD under identical loading conditions. Applied forces with extreme values caused high stress levels on both models and their abutments within physiological limits. Conclusion. Having analyzed stresses under same conditions, we concluded that the unilateral RPD and classical RPD have similar physiological values.

scholarly journals Kombinasi hybrid prosthesis dengan precision attachment pada kasus mahkota klinis pendek Hybrid prosthesis combined with precision attachment to overcome clinically short crown

2013 ◽  
Vol 12 (2) ◽  
pp. 118
Author(s):  
Irene Melina ◽  
Soekobagiono Soekobagiono ◽  
Harry Laksono
Keyword(s):  
Clinical Success ◽  
Crown Height ◽  
Removable Partial Denture ◽  
Partial Denture ◽  
Hybrid Prosthesis ◽  
Abutment Teeth ◽  
Metal Frame

In the case of losing many teeth and the residual teeth have short clinical crown, design of the denture may hybriddenture. Hybrid denture is a removable partial denture with metal frame which have retention in the form ofprecision attachment. In short clinical crown, placement of crowns and the use of traction can be a problem,because there is no or lack of retention. In the manufacture of hybrid denture with precision attachment retention,using abutment with short clinical crowns is contraindicated. But in some literatures mentioned that the rest of theclinical crown height of not less than 2 mm can still be used as an abutment, but the abutments must be modified,such as making a longer preparation towards cervical edge. In several studies and literature, it is mentioned that toimprove the retention of the crown, the axial wall of abutment must be 4-6°. This article is aimed to report the clinical success of using the hybrid denture on abutment teeth which have short clinical crowns in a patient woman

scholarly journals Osteoporosis - a risk factor for cardiovascular diseases: A follow-up study

2015 ◽  
Vol 143 (1-2) ◽  
pp. 28-34 ◽  
Author(s):  
Ivan Tasic ◽  
Marina Rasic-Popovic ◽  
Sonja Stojanovic ◽  
Bojana Stamenkovic ◽  
Svetlana Kostic ◽  
...  
Keyword(s):  
Bone Density ◽  
Postmenopausal Women ◽  
Bone Fractures ◽  
Multivariate Logistic Regression Analysis ◽  
The Elderly ◽  
Group Iii ◽  
Normal Bone ◽  
Group I ◽  
Standard Assessment

Introduction. Cardiovascular (CV) diseases and bone fractures due to osteoporosis are the leading causes of death in the elderly. Objective. The aim of this study was to demonstrate a correlation between the overall risk for CV events, and low bone density in postmenopausal women, and its impact on the incidence of serious CV events. Methods. Our prospective study involved 300 postmenopausal women. All the examinees were divided into three groups based on their measured bone density: Group I - 84 examinees with osteoporosis; Group II - 115 examinees with osteopenia; and Group III - 101 examinees with normal bone density. In all examinees the overall ten-year risk for a fatal CV event was calculated using the SCORE system tables. Results. After a 36-month follow-up, CV events occurred in 19 (6.3%) examinees. Significant differences in the incidence of CV events were demonstrated between the patients with osteoporosis, osteopenia, and normal bone density (?2=28.7; p<0.001), as well as between those with a high and low CV risk (?2=22.6; p<0.001). Multivariate logistic regression analysis showed that smoking (OR: 2.23; 95% CI: 1.02 to 6.19; p=0.035), and increase of overall CV score (OR: 1.36; 95% CI: 1.17 to 1.58; p<0.001) are associated with increased CV event risk, while the increase of T score value is associated with decreased risk of CV event (OR: 0.42; 95% CI: 0.25 to 0.73; p=0.002). Conclusion. Measurement of bone density with a standard assessment of the total CV risk could be useful for selecting women who need intensive prevention and treatment of atherosclerosis.

scholarly journals Prosthetic Rehabilitation of Cleft Lip Palate with Andrews Bridge Modified as Obturator Prosthesis: Case Report

2020 ◽  
Vol 24 (1) ◽  
pp. 57-61
Author(s):  
Almina Murić ◽  
Demet Cagil Ayvalioglu ◽  
Bilge Gokcen Rohlig
Keyword(s):  
Case Report ◽  
Cleft Palate ◽  
Orthodontic Treatment ◽  
Cleft Lip ◽  
Radiographic Evaluation ◽  
Congenital Defects ◽  
Prosthetic Rehabilitation ◽  
Removable Partial Denture ◽  
Partial Denture ◽  
Cleft Lip Palate

SummaryBackground/Aim: Congenital defects such as cleft palate and lips require a long-lasting and multidisciplinary approach. In cases when surgical and orthodontic treatment is not feasible, prosthodontic management of these patients is advocated. Prosthetic rehabilitation of cleft palate in concerning of achieving aesthetic and function (such as swallowing and speech) outcomes is very demanding.Case report: Material and method: After performing the necessary surgical procedures and orthodontic treatment, 24-years-old male patient was sent to the Department for Maxillofacial Prosthetics of Istanbul University. Followed the clinical examination, the necessary periodontal and conservative therapy was performed. After radiographic evaluation and dental cast analysis prosthetic rehabilitation was performed. The prosthetic rehabilitation of cleft palate was accomplish with conventional fixed partial denture whose number of included abutment were defined by biomechanical principles. Additionally removable partial denture were manufactured for closing oro-nasal defects and lip supporting.Conclusions: The prosthetic rehabilitation resulted with functionally and aesthetically content prosthesis. With achieving proper swallowing Quality of Life of the patient was enormously enhanced.

scholarly journals Radiographic Evaluation of the Bone Remodeling on Tilted Osseointegrated Implants: Follow-up at 1 Year

2020 ◽  
Vol 21 (4) ◽  
pp. 463-470
Author(s):  
Maddalone Marcello ◽  
Mirabelli Luca ◽  
Breschigliaro Sara ◽  
Baldoni Marco
Keyword(s):  
Bone Remodeling ◽  
Radiographic Evaluation ◽  
Osseointegrated Implants

scholarly journals Maxillary removable partial denture combined with O’ring attachment implant: a case report

2018 ◽  
Author(s):  
Tiago Rebelo Costa ◽  
Cláudio Akira Yamaguchi ◽  
Alessandra Pucci Mantelli Galhardo ◽  
Roberto Chaib Stegun ◽  
Bruno Costa ◽  
...  
Keyword(s):  
Case Report ◽  
Oral Rehabilitation ◽  
Removable Partial Denture ◽  
Partial Denture ◽  
Aesthetic Result ◽  
First Choice ◽  
Abutment Teeth ◽  
Fixed Prosthesis ◽  
The Aesthetic ◽  
Systemic Health

Oral rehabilitation with free-end removable partial denture (RPD) is one of the major challenges in prosthodontic dentistry. The absence of a distal abutment produces undesirable RPD movement during masticatory function due to the high resilience of the residual ridge, which limits the denture efficiency and may damage the abutment teeth and bone over time. The advent of dental implants made possible to substitute the missing teeth with fixed implant-supported dentures as the first choice treatment to overcome such inconveniences. However, this indication may not be suitable for all patients due to financial, anatomical or systemic health conditions. Nevertheless it is possible to improve free extension RPD by using implants in the posterior edentulous ridge to achieve biological, biomechanical, physiological and social benefits. This article aims to present a case report on oral rehabilitation in which a RPD was made combined with an implant for posterior support in a sizeable edentulous ridge. The patient appreciated the retention improvement and the aesthetic result. The combination of a RPD with a posterior implant is an alternative treatment for cases in which implant-supported fixed prosthesis is not indicated, reducing the displacement and minimizing the limitations of the free-end devices.

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