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removable denture failure

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https://www.readbyqxmd.com/read/28835600/titanium-removable-denture-based-on-a-one-metal-rehabilitation-concept
#1
Chikahiro Ohkubo, Yohei Sato, Yuichiro Nishiyama, Yasunori Suzuki
The use of a single metal for all restorations would be necessary because it protects against metal corrosion caused by the contact of different metals. For this "one-metal rehabilitation" concept, non-alloyed commercially pure (CP) titanium should be used for all restorations. Titanium frameworks have been cast and used for the long term without catastrophic failure, whereas they have been fabricated recently using computer-aided design/computer-aided manufacturing (CAD/CAM). However, the milling process for the frameworks of removable partial dentures (RPDs) is not easy because they have very complicated shapes and consist of many components...
August 24, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/28750107/practice-based-longitudinal-study-of-multifactorial-risk-assessment-for-periodontal-condition-and-survival-of-remaining-teeth-in-patients-with-removable-partial-dentures
#2
Shigeto Koyama, Takeshi Fuji, Takashi Ohi, Kenji Kadowaki, Nobuhiro Yoda, Keiichi Sasaki
PURPOSE: This retrospective cohort study examined factors affecting the periodontal condition and survival of remaining teeth 5 years after removable partial denture (RPD) placement using multivariate analyses. MATERIALS AND METHODS: Of 231 patients who received RPDs at Tohoku University Hospital, 108 patients who had agreed to undergo a 5-year follow-up were examined. The outcomes of RPD treatment were assigned to one of three categories: successful (n = 58), remake (n = 36), and failure (n = 14)...
July 27, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28602850/repair-may-increase-survival-of-direct-posterior-restorations-a-practice-based-study
#3
Luciano Casagrande, Mark Laske, Ewald M Bronkhorst, Marie Charlotte D N J M Huysmans, Niek J M Opdam
OBJECTIVES: To investigate repairs of direct restorations by a group of Dutch general dental practitioners (GDPs) and its consequences on longevity of restorations. METHODS: Data set was based on dental records of patients attending 11 general dental practices (24 Dentists) in the Netherlands. Patients that received Class II Amalgam or Composite restorations were included in the study. The outcomes were considered in two levels: "Success" - When no intervention was necessary on the original restoration, it was considered clinically acceptable...
June 8, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28598526/aspects-of-malpractice-in-prosthodontics
#4
REVIEW
Mohammad Zakaria Nassani
Crowns, fixed partial dentures, and removable dentures are the popular prosthetic dental restorations in current dental practice. Prosthodontic rehabilitation of the mouth, particularly in advanced and complex cases, requires careful planning, adequate clinical skills, and exacting technical standards. While a successful outcome is the ultimate goal for any prosthodontic treatment, complications, injuries, dissatisfaction, and/or failure may occur. When such events develop as a result of negligence or violation of standards of care, they are considered under the term of malpractice and may incur ethical and medico-legal implications...
June 9, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/28552286/biomechanical-effects-of-implant-number-and-diameter-on-stress-distributions-in-maxillary-implant-supported-overdentures
#5
Gizem Dimililer, Sercan Kücükkurt, Sedat Cetiner
STATEMENT OF PROBLEM: Implant-supported overdentures (ISOs) are considered a good alternative to conventional removable dentures. However, varying rates of failure have been reported in some clinical studies. Excessive stress on surrounding tissues is one of the possible causes of implant failure. As stress is transmitted to the bone through the implant, careful planning, correct number of implants, and implant positioning are keys to ensuring appropriate stress distribution. However, research of the optimal number of implants necessary to support a maxillary ISO is insufficient...
May 26, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28512551/consensus-statements-and-clinical-recommendations-on-treatment-indications-surgical-procedures-prosthetic-protocols-and-complications-following-all-on-4-standard-treatment-9th-mozo-grau-ticare-conference-in-quintanilla-spain
#6
REVIEW
Miguel Penarrocha-Diago, María Penarrocha-Diago, Regino Zaragozí-Alonso, David Soto-Penaloza, Meeting On Behalf Of The Ticare Consensus
OBJECTIVES: The present consensus report critically evaluates the scientific evidence based on a comprehensive systematic review of the All-On-4 treatment concept, focusing primarily on the treatment indications, surgical procedures and prosthetic protocols, and secondarily on the mechanical and biological complications involved. MATERIAL AND METHODS: A systematic review was made in advance of the meeting. Consensus statements, treatment guidelines and recommendations for future research were based on within-group as well as plenary debates and discussions of the systematic review...
May 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28467258/effect-of-endocrown-pulp-chamber-extension-depth-on-molar-fracture-resistance
#7
A Hayes, N Duvall, M Wajdowicz, H Roberts
PURPOSE: The purpose of this study was to evaluate the effect of endocrown pulp chamber extension on mandibular molar fracture resistance. METHODS AND MATERIALS: A total of 36 recently extracted mandibular third molars of approximate equal size were sectioned at the facial lingual height of contour followed by endodontic access into the pulp chamber. The specimens were then randomly divided into three groups (n=12) and pulpal and root canal contents removed. Pulp chamber floors were established at 2, 3, and 4 mm from the occlusal table using a three-step etch-and-rinse adhesive and a flowable resin composite...
May 2017: Operative Dentistry
https://www.readbyqxmd.com/read/28265238/implant-prosthetic-rehabilitation-after-radiation-treatment-in-head-and-neck-cancer-patients-a-case-series-report-of-outcome
#8
Jasna Cotic, Jure Jamsek, Milan Kuhar, Natasa Ihan Hren, Andrej Kansky, Mutlu Özcan, Peter Jevnikar
BACKGROUND: Slovenia has a high burden of head and neck cancer. Patients are mostly treated with surgery followed by radiation therapy. Advanced surgical and prosthodontic techniques have expanded the rehabilitation options. The aim of the study was to review the outcome of implant-prosthetic treatment after radiation therapy. PATIENTS AND METHODS: Twenty irradiated head and neck cancer patients who received a removable implant-supported denture at the University Medical Centre Ljubljana were included in the study...
March 1, 2017: Radiology and Oncology
https://www.readbyqxmd.com/read/28258271/patterns-of-restorative-failure-among-khat-and-shammah-users-in-jazan-city-kingdom-of-saudi-arabia-a-cross-sectional-survey
#9
Mohammed E Sayed, Razan A Bosly, Huda A Hakami, Maryam H Mugri, Shilpa H Bhandi
INTRODUCTION: The effect of Khat and Shammah habits, with the parafunctional jaw activities that accompany them, on the integrity of the natural dentition, dental restorations, and prostheses has not yet been investigated. This study is the first attempt to identify the patterns of restorative failure among Khat chewers and Shammah users in Jazan City, Kingdom of Saudi Arabia. MATERIALS AND METHODS: A cross-sectional study was conducted in 294 recruits among dental clinics in Jazan City, Kingdom of Saudi Arabia, from October 1, 2015, to April 30, 2016...
March 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28202072/a-pilot-randomised-controlled-trial-evaluating-mini-and-conventional-implant-retained-dentures-on-the-function-and-quality-of-life-of-patients-with-an-edentulous-mandible
#10
Sarra Jawad, Craig Barclay, William Whittaker, Martin Tickle, Tanya Walsh
BACKGROUND: Total tooth loss (edentulism) can be a debilitating condition, impacting on ability to chew, speak and interact with others. The most common treatment is with complete removable dentures, which may be successful, but in the lower jaw, bone resorption that worsens over time makes denture-wearing difficult. Two dental implants in the mandible to retain the lower denture has been advocated as the gold standard of treatment, but has not been universally provided due largely to financial constraints and also patient fear...
February 15, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/27738426/endoscopic-removal-of-ingested-dentures-and-dental-instruments-a-retrospective-analysis
#11
Ken-Ichi Mizuno, Kazuya Takahashi, Kentaro Tominaga, Yuki Nishigaki, Hiroki Sato, Satoshi Ikarashi, Kazunao Hayashi, Takashi Yamamoto, Yutaka Honda, Satoru Hashimoto, Kenya Kamimura, Manabu Takeuchi, Junji Yokoyama, Yuichi Sato, Masaaki Kobayashi, Shuji Terai
Background. Dentures and dental instruments are frequently encountered ingested foreign bodies. The aim of the present study was to assess the safety and efficacy of endoscopically removing ingested dental objects. Methods. Twenty-nine consecutive patients with 29 dental objects who were treated at the Niigata University Medical and Dental Hospital from August 2009 to December 2015 were retrospectively reviewed. Characteristics of the patients and the ingested dental objects, the clinical features and findings of radiological imaging tests, and outcomes of endoscopic removal were analyzed...
2016: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/27733724/hidden-overdenture-bar-in-fixed-implant-retained-hybrid-prosthesis-report-of-a-novel-technique
#12
Prajna P Shetty, Makam Gangaiah, Ramesh Chowdhary
INTRODUCTION: Every patient needs a comprehensive treatment planning. Dentists must consider the advantages and disadvantages of the available implant prosthetic options and match them to patient's expectations. Hybrid denture prosthesis is one, i.e., fabricated and retained by screw threaded into implant abutments, most of the time on four implants. Sometimes due to failure of an implant, the prosthesis needs to be replaced with a newer casting to accommodate the existing implants. Clinical consideration: This article presents a novel technique, wherein the existing framework of the fixed prosthesis can be used to convert the fixed prosthesis to removable prosthesis on the existing implants, without recasting...
September 1, 2016: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/27437367/epidemiological-data-and-survival-rate-of-removable-partial-dentures
#13
Amália Moreno, Marcela Filié Haddad, Marcelo Coelho Goiato, Eduardo Passos Rocha, Wirley Gonçalves Assunção, Humberto Gennari Filho, Emerson Gomes Dos Santos, Mariana Vilela Sonego, Daniela Micheline Dos Santos
INTRODUCTION: The use of removable partial denture (RPD) is considered as low-cost and common treatment option to rehabilitate edentulous areas. AIM: This study aimed to investigate the epidemiological data of patients rehabilitated with removable partial denture (RPD) in order to assess treatment survival rate and failures. MATERIALS AND METHODS: Epidemiological data and medical records of patients treated with RPD between 2007 and 2012 at the RPD discipline of a Brazilian University (Aracatuba Dental School- UNESP) were evaluated as well as dental records of patients who underwent RPD treatments (fabrication or repairs) between 2000 and 2010...
May 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27134422/outcome-of-single-maxillary-complete-dentures-opposing-mandibular-teeth-a-need-to-introspect-on-the-prosthodontic-treatment-protocol
#14
Sudhir Bhandari
INTRODUCTION: In the era of implant supported restorations, conventional complete denture (CD) for isolated edentulous maxilla still remains the first choice of treatment despite being its frequent mechanical failures. STATEMENT OF PROBLEM: Edentulous maxillary arch restored with polymethyl methacrylate (PMMA) based CDs when opposed by natural and/or restored dentition is biomechanically and functionally a compromised rehabilitation. MATERIALS AND METHODS: Seven patients (4 males, 3 females) in the age range of 55-75 years were treated for their frequent fracture of the single maxillary denture...
January 2016: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/27061633/failure-strengths-of-denture-teeth-fabricated-on-injection-molded-or-compression-molded-denture-base-resins
#15
Nathan E Robison, Daranee Tantbirojn, Antheunis Versluis, David R Cagna
STATEMENT OF PROBLEM: Denture tooth fracture or debonding remains a common problem in removable prosthodontics. PURPOSE: The purpose of this in vitro study was to explore factors determining failure strengths for combinations of different denture tooth designs (shape, materials) and injection or compression molded denture base resins. MATERIAL AND METHODS: Three central incisor denture tooth designs were tested: nanohybrid composite (NHC; Ivoclar Phonares II), interpenetrating network (IPN; Dentsply Portrait), and microfiller reinforced polyacrylic (MRP; VITA Physiodens)...
August 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/26880054/failure-mechanisms-in-denture-adhesives
#16
Yiran An, Danyang Li, Nima Roohpour, Julien E Gautrot, Asa H Barber
OBJECTIVE: The mechanical properties of bio adhesives in oral care application are expected to be critical in defining the stability and release of devices such as dentures from the oral tissue. A multiscale experimental mechanical approach is used to evaluate the performance of denture adhesive materials. METHODS: The inherent mechanical behavior of denture fixatives was examined by separating adhesive material from a representative polymethyl methacrylate (PMMA) surface using atomic force microscopy (AFM) approaches and compared to macroscopic mechanical testing...
May 2016: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/26799154/multicentre-prospective-evaluation-of-implant-assisted-mandibular-removable-partial-dentures-surgical-and-prosthodontic-outcomes
#17
Alan G T Payne, Andrew Tawse-Smith, Daniel Wismeijer, Rohana K De Silva, Sunyoung Ma
OBJECTIVE: To determine implant survival and prosthodontic maintenance of implant-assisted mandibular removable partial dentures in a multicentre prospective study up to 10 years. MATERIALS AND METHODS: Forty-eight participants with mandibular distal extension partial dentures were selected. A control group of 12 New Zealand participants had new conventional mandibular partial dentures made. Three test groups of 36 participants in New Zealand (n = 12), the Netherlands (n = 12) and Colombia (n = 12) had bilateral distal implants placed...
January 22, 2016: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/26794049/malpositioned-implants-in-the-anterior-maxilla-a-novel-restorative-approach-to-reestablish-peri-implant-tissue-health-and-acceptable-esthetics-part-ii-case-report-and-discussion
#18
Osvaldo D Moráguez, Francesca Vailati, Urs C Belser
This two-part case presentation describes the prosthetic challenge of managing complications in a 50-year-old female patient after inadequate esthetic risk assessment, treatment planning, and implant placement in the anterior maxilla. In Part I, the clinical situation was described, and different restorative solutions were proposed to correct the extreme facial inclination of the implants, excluding major surgical procedures, namely implant removal. In Part II, different prosthetic options are discussed, and the final treatment is revealed...
2015: International Journal of Esthetic Dentistry
https://www.readbyqxmd.com/read/26749784/the-evolution-and-fabrication-of-implant-supported-full-arch-hybrid-prostheses-from-conventional-casted-metal-to-an-all-ceramic-zirconia
#19
Amanda Ouzer
Implant-supported, full-arch hybrid prostheses have developed from cast-metal frameworks with acrylic or porcelain to all-ceramic zirconia frameworks. CAD/CAM manufacturing removed the inaccuracies seen with casting and made use of zirconia possible. The materials and processes for prosthodontic fabrication are explained. Zirconia is highly opaque and versatile. However, porcelain-veneered zirconia frameworks have shown higher enamel wear, among other problems. Lithium disilicate has been shown to be more translucent than zirconia...
November 2015: New York State Dental Journal
https://www.readbyqxmd.com/read/26523715/treatment-outcomes-of-cantilever-fixed-partial-dentures-on-vital-abutment-teeth-a-retrospective-analysis
#20
Peter Rehmann, Anke Podhorsky, Bernd Wöstmann
PURPOSE: This retrospective clinical study evaluated the long-term outcomes of cantilever fixed partial dentures (CFPDs) and the factors influencing their survival probability. MATERIALS AND METHODS: The study is based on a convenience sample of 57 patients who received 71 CFPDs on a total of 176 vital abutment teeth. The mean survival time of the CFPDs was calculated using a Kaplan-Meier estimate. The following variables were analyzed as covariates of the survival function (logrank test, P < ...
November 2015: International Journal of Prosthodontics
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