scholarly journals The Applicability of Functional Analysis in Fixed Prosthetics

2021 ◽  
Vol 26 (2) ◽  
pp. 67-69
Author(s):  
Cristina Adriana Dahm Tătaru
Keyword(s):  
Functional Analysis ◽  
Temporomandibular Joint ◽  
Dental Restoration ◽  
Good Communication ◽  
Dental Restorations ◽  
Important Requirement ◽  
Dental Technician ◽  
Fixed Prosthesis

Abstract Prost hetics is a field that requires a very good synergy between the dentist and the dental technician in order to create a prothetic treatment that is precise, functional and has also a good aesthetic. A good communication between the two parties is very important because, in most cases, dental technicians are located remotely and often do not see the patient. Functional analysis is an important requirement for diagnosing many different syndromes, which are usually associated with incorrect loading of the temporomandibular joint or dysfunctions. Fixed prosthesis focused on permanently attached (fixed) dentures. Such dental restorations, also called indirect restorations, include crowns, bridges (fixed prostheses), inlays, onlays and veneers. Fixed prosthesis can be used to restore one or more individual teeth, covering areas where the teeth have been lost. In general, the main advantages of fixed prosthetics compared to direct restorations are the superior strength when used in large restorations and the ability to build a tooth that has also a good aesthetic shape. As with any dental restoration, the principles used to determine Proper restoration involves taking into account the materials to be used, the extent of the tooth damage, the orientation and location of the teeth and the condition of the adjacent teeth.

scholarly journals Dental restoration longevity among geriatric and adult special needs patients

2017 ◽  
Author(s):  
D. J. Caplan ◽  
Y. Li ◽  
W. Wang ◽  
S. Kang ◽  
L. Marchini ◽  
...  
Keyword(s):  
Special Needs ◽  
Regression Models ◽  
Cox Regression ◽  
Dental Treatment ◽  
Treatment Options ◽  
Dental Restoration ◽  
University Of Iowa ◽  
Restorative Treatment ◽  
Dental Restorations ◽  
Iowa College

AbstractThis study aimed to describe the survival trajectory of dental restorations placed in an outpatient population of geriatric and adult special needs patients over a 15-year span, with particular interest in longevity of subsequent restorations in teeth that received multiple restorations over time. Dental restorations of different types and sizes in patients age ≥65 years treated between 2000-14 at the University of Iowa, College of Dentistry were followed until they incurred an event (i.e., restoration replacement, extraction of the tooth, or endodontic treatment of the tooth). Survival analysis and extended Cox regression models were used to generate hazards ratios for selected predictor variables. A total of 9184 restorations were followed in 1551 unique patients. During the follow-up period, 28.7% of these restorations incurred an event; and overall the restorations had a median lifespan of 6.25 years. In multivariable regression models, after controlling for gender and age, composite restorations and greater number of restoration surfaces were associated with higher risks of failure; and the initial restoration recorded in the database for each subject tended to have lower risk of failure than restorations placed later that included any of those same surfaces. This information potentially could be helpful to elderly patients considering various restorative treatment options during the dental treatment planning and informed consent process.

Screw-Retained Implant-Supported Fixed Dental Restorations: A Rational Method to Overcome Esthetic Issues with the Screw-Access Hole

2021 ◽  
Vol 7 (4) ◽  
Author(s):  
Etienne O ◽  
◽  
Waltmann E ◽  
Serfaty R ◽  
◽  
...  
Keyword(s):  
Bacterial Contamination ◽  
Point Of View ◽  
Dental Restoration ◽  
Rational Method ◽  
Rational Analysis ◽  
Dental Restorations ◽  
Access Hole ◽  
Functional Point ◽  
New Perspective ◽  
Materials Used

Achieving both esthetics and a perfect seal of the screw-access hole in a screw-retained implant-supported fixed dental restoration is a great challenge. From a functional point of view, a perfect seal needs to be obtained to prevent bacterial contamination along the screw access canal and the occlusion shall be addressed. Such a challenging procedure has to be based on a rational analysis of the different materials used. Screw-retained zirconia-based restorations offer a new perspective for esthetic and biocompatible results. The aim of this article is to describe an easy and reproducible clinical procedure to esthetically seal the screw-access hole of screw-retained implant-supported fixed dental restorations.

scholarly journals High bonding strength between zirconia and composite resin based on combined surface treatment for dental restorations

2020 ◽  
Vol 18 ◽  
pp. 228080002092865
Author(s):  
Rui li ◽  
Chen Wang ◽  
Shi Qing Ma ◽  
Zi Hao Liu ◽  
Cheng Cheng Zang ◽  
...  
Keyword(s):  
Bond Strength ◽  
Thermal Cycling ◽  
Bonding Strength ◽  
Shear Bond Strength ◽  
Composite Resin ◽  
Combined Treatment ◽  
Testing Machine ◽  
Dental Restoration ◽  
Zirconia Ceramic ◽  
Dental Restorations

Zirconia is the preferred material for dental restorations; however, dental restorations are usually affected by zirconia fractures due to chipping and delamination of the veneer ceramic. One effective solution for repairing chemically inert zirconia frameworks is to strongly chemically bond them with the composite resin via surface modification. Thus, the bonding strength between the zirconia and composite resin determines the performance of dental restoration. Herein, we investigate the shear bond strength between zirconia ceramic and two ceramic repair systems before and after thermal cycling based on different surface pretreatments, including air-abrasion and a novel silane coupling agent. When treated with combined sandblasting, novel silane and 10-methacryloyloxydecyl hydrogen phosphate act as a bonding agent for the zirconia surface, and the maximum shear bond strength achieves 27.5 MPa, as measured by a universal testing machine through the average of 16 separate measurements. The results show that the combined treatment resists the interface damage caused by expansion and contraction during thermal cycling. The long-term bond durability is due to the micro-mechanical bond force formed by resin and ceramic, and the chemical bonds of Zr-O-Si at the interface. Results indicate that selective pretreating the surface results in high bond strength between the zirconia and the composite resin, which is meaningful to optimize dental restoration.

scholarly journals Kinetic Radiography and Functional Analysis of the Temporomandibular Joint (TMJ)

2003 ◽  
Vol 59 (3) ◽  
pp. 416-422 ◽  
Author(s):  
NATSUKO BANDAI ◽  
SHIGERU SANADA ◽  
KOICHIRO UEKI ◽  
SHINTARO FUNABASAMA ◽  
TAKESHI MATSUI ◽  
...  
Keyword(s):  
Functional Analysis ◽  
Temporomandibular Joint

A Review of the Low-Temperature Degradation of Dental Zirconia

2014 ◽  
Vol 606 ◽  
pp. 85-88
Author(s):  
Mohamed M. Aboras ◽  
Kai Yuan Theng ◽  
Andanastuti Muchtar ◽  
Che Husna Azhari ◽  
Norziha Yahaya
Keyword(s):  
Mechanical Properties ◽  
Optical Properties ◽  
Low Temperature ◽  
Tetragonal Zirconia ◽  
Dental Restoration ◽  
Restorative Material ◽  
Dental Restorations ◽  
Biological Compatibility ◽  
Oral Environment ◽  
Dental Restorative

The use of tetragonal zirconia as a dental restorative material has recently increased because of its unique mechanical and optical properties, as well as high biological compatibility with the oral cavity environment. However, the mechanical properties of zirconia can be severely degraded, which leads to the failure of dental restorations. This review focuses on the low-temperature degradation of dental zirconia and its effects on the properties of zirconia and on the oral environment. The purpose is to show the importance of this negative phenomenon and suggest guidelines for minimizing the aging of zirconia that is used as a dental restoration material.

scholarly journals Fabrication Technique of Dental Restoration Using Hybrid Ceramic With Cad Cam Method

2017 ◽  
Vol 1 (1) ◽  
pp. 32
Author(s):  
Meita Andriyani ◽  
Sonya Harwasih ◽  
Eny Inayati
Keyword(s):  
Ceramic Material ◽  
Load Capacity ◽  
Polymer Network ◽  
High Strength ◽  
Hybrid Structure ◽  
Dental Restoration ◽  
Hybrid Network ◽  
Dental Restorations ◽  
Cad Cam ◽  
Hybrid Ceramic

Background :  Ceramic is superior in aesthetic but fragile and breakable under bite pressure . Lack of understanding of material requirements for resistance in the oral cavity and minimal ceramic processing techniques is the initial cause of the failure. Hybrid ceramic dental restoration is a material that combines the good properties of ceramics and composites that have elasticity and ensures high strength and minimize the wall thickness of the restoration. Mechanical manufacture of dental restorations currently growing, CAD CAM systems are becoming popular in the field of dentistry. CAD CAM provides the advantage that the effectiveness of the time, does not require a lot of human resources, and produce a restoration with good quality. Purpose:  To explain hybrid ceramic material and techniques of making  hybrid ceramic dental restorations with CAD CAM system. Review: Hybrid ceramic is a material that combines the advantages of ceramics and composite elasticity. This material contains a hybrid structure with two networks, ceramic and polymer are linked to each other, known as double hybrid network. It added that the structure of the ceramic feldspathic network (86% wt) is reinforced by a polymer network (14% wt) are integrated as a polymer network filling cavities that exist in the network and make its structure ceramic hybrid ceramic material becomes denser. Conclusion: Hybrid ceramic having chewing load capacity and high elasticity, flexural strength  150-160 Mpa and fracture toughness 1.5 Mpa, higher than conventional ceramics. Mechanical manufacture of dental restorations using ceramic hybrid materials with CAD CAM method begins with scanning, selection of materials and tooth shade, designing, milling, followed by finishing, polishing, ends with staining and glazing.

scholarly journals Multidisciplinary management of temporomandibular joint ankylosis in an adult: journey from arthroplasty to oral rehabilitation

2021 ◽  
Vol 14 (9) ◽  
pp. e245120
Author(s):  
Kamlesh Kothari ◽  
Naveenkumar Jayakumar ◽  
Aayesha Razzaque
Keyword(s):  
Temporomandibular Joint ◽  
Rural Areas ◽  
Maxillofacial Surgery ◽  
Dental Restoration ◽  
Delayed Presentation ◽  
Multidisciplinary Management ◽  
Oral Rehabilitation ◽  
Temporomandibular Joint Ankylosis ◽  
Joint Ankylosis

Ankylosis of the temporomandibular joint is a debilitating condition resulting in progressive trismus and facial disfigurement. Common trigger factors include paediatric mandibular trauma, middle ear infection or traumatic childbirth. Although diminishing in incidence among urban population, it is still prevalent in the underprivileged world. Substandard child safety norms, delayed presentation, lack of access to specialties like maxillofacial surgery in rural areas and absence of follow-up contribute to ankylosis. Afflictions in ankylosis are multipronged, involving aesthetic, functional, psychological and nutritional implications to name a few. The damage this pathology causes to the young mind and their morale is humongous. Although well documented, a complete presentation of cases with follow-up till oral and myofascial rehabilitation is seldom reported. This paper describes multidisciplinary management of a young female patient with temporomandibular joint ankylosis. Staged management commencing from interpositional arthroplasty until dental restoration with a 2-year follow-up is presented in this paper.

Performance Study on Miniaturized Rapid Denture Repair System

2012 ◽  
Vol 591-593 ◽  
pp. 315-318
Author(s):  
Lin Zhang ◽  
Fen Fen Tu ◽  
Jie Wang
Keyword(s):  
Processing System ◽  
Dental Restoration ◽  
System Structure ◽  
Repair System ◽  
Performance Study ◽  
Technical Parameters ◽  
Dental Restorations ◽  
Cad Cam ◽  
Machining System ◽  
Laser Interferometers

The paper presents a miniaturized two-spindle rapid denture repair system with applications on CAD/CAM dental restorations. The necessary functions possessed by denture processing system in medical treatment environment were defined, and the main technical parameters of the machining system were determined. The modal tests of the system structure were conducted for the key areas vibration mode. The volumetric geometric errors of the system were measured with laser interferometers. At last, the milling experiments of human molar crown denture were carried out with the mean surface roughness Ra value 0.8μm, which is consistent with the requirement of dental restoration.

scholarly journals Correlation analysis of craniomandibular index and gothic arch tracing in patients with craniomandibular disorders

2011 ◽  
Vol 68 (7) ◽  
pp. 594-601 ◽  
Author(s):  
Jelena Todic ◽  
Dragoslav Lazic ◽  
Radiovoje Radosavljevic
Keyword(s):  
Functional Analysis ◽  
Temporomandibular Joint ◽  
Lateral Asymmetry ◽  
Jaw Movements ◽  
Craniomandibular Dysfunction ◽  
Lateral Dislocation ◽  
Lower Jaw ◽  
Joint Disorder ◽  
Functional Analyses ◽  
Gothic Arch

Background/Aim. Complex etiology and symptomatology of craniomandibular dysfunction make the diagnosing and therapy of this disorder more difficult. The aim of this work was to assess the value of clinical and instrumental functional analyses in diagnosing of this type of disorders. Methods. In this study 200 subjects were examined, 15 with temporomandibular joint disorder. They were subjected to clinical functional analysis (Fricton-Shiffman) and instrumental functional analysis by using the method of gothic arch. The parameters of the gothic arch records were analyzed and subsequently compared among the subjects of the observed groups. Results. In the examined group of the population 7.5% of them were with craniomandibular dysfunction. The most frequent symptoms were sound in temporomandibular joint, painful sensitivity of the muscles on palpation and lateral turning of the lower jaw while opening the mouth. By analyzing the gothic arch records and comparing the obtained values between the observed groups it was assessed that: lateral and protrusion movements, lateral amplitude and the size of gothic arch were much bigger in the healthy subjects, and latero-lateral asymmetry was larger in the sick subjects. Latero-lateral dislocation of apex was recorded only in the sick subjects with average values of 0.22 ? 0.130 mm. The correlation between the values of Fricton-Shiffman craniomandibular index and the parameters of the gothic arch records and latero-lateral amplitude and dislocation of apex records were established by correlative statistical analysis. Conclusion. Functional analysis of orofacial system and instrumental analysis of lower jaw movements (gothic arch method) can be recommended as precise and simple methods in diagnosing craniomandibular dysfunctions.

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