Concept: Restorative dentistry
A Technique for Retrofitting a Metal Ceramic Crown to an Attachment-Retained Removable Partial Denture: A Clinical Report
- Journal of prosthodontics : official journal of the American College of Prosthodontists
- Published about 3 years ago
In dental applications, precision attachments have been used to retain removable partial dentures (RPDs) for several decades. Various types of extracoronal attachments are commonly used in combination with fixed partial dentures and RPDs to achieve retention and stability. Fracture of the framework, fracture of the roots or teeth, and irretrievable decrease of retention are common reasons for a failed attachment-retained RPD. Another complication of metal ceramic crowns with precision attachment is decementation of the crowns. When fixed components of the attachment-retained RPD fail, the traditional treatment approach requires remaking both the fixed and removable components of the attachment-retained RPD. This technique describes retrofitting of a metal ceramic crown to a resilient attachment-retained RPD.
Aim of the study was to evaluate the long-term reliability and effectiveness of inlays and onlays in ceramic and composite material, examining scientific studies published from 2004 to 2013. The results of this review were analyzed and compared with the important literature review proposed by Manhart in 2004.
Preclinical dental students must demonstrate aptitude in the preparation of teeth for treatment with several types of fixed dental prostheses. The optimal sequence of instruction and examination of these crown preparations in preclinical fixed prosthodontics is unknown. The aim of this study was to determine if grading scores by faculty and students were affected by changing the sequence of crown type preparations. Practical exams of two successive student cohorts (n=89 in 2014; n=92 in 2015) at one U.S. dental school using three crown preparations (full cast, porcelain fused to metal, and all-ceramic) in different order were analyzed by faculty grades and student self-assessment. All of the models indicated that the sequence in which the crown type preparations were taught did have an effect on the grades. The 2014 cohort had overall higher grades and particularly higher grades for the all-ceramic crown preparations. Evaluation scores were affected by the sequence in which the different crown type preparations were taught and tested. Although the overall results suggested that students may perform better if the all-ceramic crown preparation is taught last, this tendency may differ between years.
Indirect restorations are an important treatment in dental practice, but long-term survival studies are lacking.
Indirect restorations with partial or complete occlusal surface coverage have been recommended to restore teeth with weakened walls in order to prevent cusp fracture. The success of these restorations when performed by dental students is unknown.
Oral rehabilitation often requires a multidisciplinary approach including restorative dentistry, prosthodontics, and periodontology to fulfill high esthetic and functional demands, frequently combined with changes in the vertical dimension. The presence of gingival recessions can be associated with numerous factors, such as brushing or preparation trauma and persistent inflammation of the gingiva due to inadequate marginal fit of restorations. Because gingival recessions can cause major esthetic and functional problems, obtaining stability of the gingival tissue around prosthetic restorations is of essential concern. Modifications of the occlusal vertical dimension require sufficient experience of the whole dental team. Especially in patients with functional problems and craniomandibular dysfunction, a newly defined occlusal position should be adequately tested and possibly adjusted.
This cross over study aimed to evaluate the effect of telescopic distal extension removable partial dentures on oral health related quality of life and maximum bite force MATERIALS AND METHODS: Twenty patients with complete maxillary edentulism and partially edentulous mandibles with anterior teeth only remaining were selected for this cross over study. All patients received complete maxillary dentures and mandibular partial removable dental prosthesis (PRDP, control). After 3 months of adaptation, PRDP was replaced with conventional telescopic partial dentures (TPD) or telescopic partial dentures with cantilevered extensions (TCPD) in a quasi-random method. Oral health related quality of life (OHRQoL) was measured using OHIP-14 questionnaire and Maximum bite force (MBF) was measured using a bite force transducer. Measurements were performed 3 months after using each of the following prostheses; PRDP, TPD, and TCPD.
Background Funding for implant-based treatment within secondary care is limited, and acceptance criteria are determined locally according to funding agreements with NHS England. Indefinite review of all patients in secondary care is unlikely to be feasible due to limitations on departmental capacity. The increasing number of patients provided with implant-based treatment in secondary care has resulted in a growing maintenance burden, raising the question of who should provide this care. Management of some complications within primary care would facilitate patients' access to treatment, although no specific provision for maintenance of implant-retained prostheses is made within the NHS Dental Charges Regulations.Materials and methods An online survey was carried out to review services provided within restorative dentistry departments across the UK, investigating departmental protocols for review and maintenance of patients provided with dental implants.Results There was no consensus view on review protocols, discharge or provision of maintenance following implant placement. Fifty-seven percent would indefinitely carry out remake of implant-retained overdentures when clinically indicated, replace worn inserts, housings or abutments. Sixty-one percent would manage loose/lost screw- or cement-retained restorations and 68% would manage fractured restorations. Re-referral for peri-implant disease would be accepted by 64% of respondents. The lack of clear NHS funding for the management of complications was of concern to respondents in this survey.
To compare function, patient satisfaction and quality of life of patients with a posterior reduced mandibular arch with those who had all missing teeth replaced with removable partial dentures.
Dental implant planning is facilitated, and accuracy and predictability are enhanced using a Dual Scan technique of the patient’s existing removable partial denture.