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partial denture

Carla Thais Rosada Peruchi, Regina Célia Poli-Frederico, Alexandrina Aparecida Maciel Cardelli, Marina de Lourdes Calvo Fracasso, Carina Gisele Costa Bispo, Rejane Dias Neves-Souza, Jefferson Rosa Cardoso, Sandra Mara Maciel
The aim of this study was to investigate the association between oral health status and central obesity (CO) in Brazilian independent-living elderly. A cross-sectional study was carried out in a sample of 489 elderly, who were participants of the Study on Aging and Longevity, in Londrina, state of Parana. The number of natural teeth and use of prostheses were evaluated according to the World Health Organization criteria. The presence of CO was assessed using measures of waist circumference (WC) and waist-hip ratio (WHR)...
October 24, 2016: Brazilian Oral Research
Charlotte Jensen, Gerry M Raghoebar, Wouter Kerdijk, Henny J A Meijer, Marco S Cune
OBJECTIVES: To assess the benefits of implant support to Removable Partial Dentures (RPD) in patients with a bilateral free-ending situation in the mandible and to determine the most favorable implant position: the premolar (PM) or the molar (M) region. METHODS: Thirty subjects with a bilateral unbounded posterior saddle received 2 PM and 2M Implants. A new RPD was placed. Implant support was provided 3 months later. Two PM implants supported the RPD. After 3 months the 2M implants were used or vice versa...
October 18, 2016: Journal of Dentistry
Rachel A Sheridan, Ann M Decker, Alexandra B Plonka, Hom-Lay Wang
PURPOSE: Occlusal overload may cause implant biomechanical failures, marginal bone loss, or even complete loss of osseointegration. Thus, it is important for clinicians to understand the role of occlusion in implant long-term stability. This systematic review updates the understanding of occlusion on dental implants, the impact on the surrounding peri-implant tissues, and the effects of occlusal overload on implants. Additionally, recommendations of occlusal scheme for implant prostheses and designs were formulated...
October 4, 2016: Implant Dentistry
Arun Ramchandran, Kaushal Kishor Agrawal, Pooran Chand, Ramashanker, Raghuwar Dayal Singh, Anusar Gupta
The Kennedy Class I and II distal extension situation poses a challenge to the prosthodontist as it inherently possesses a lack of stability, which may be attributed to the difference in compressibility of the mucosa and the periodontal ligament surrounding the distal-most abutment tooth. This results in a rotational tendency of the prosthesis around the line connecting its terminal abutments. Placement of osseointegrated dental implants in the posterior edentulous regions, distal to the terminal abutment provides improved vertical support to the distal extension removable partial denture, effectively converting its intraoral performance from a Kennedy Class I to a Class III situation, thereby resulting in improved stability of the prosthesis and consequently, enhanced patient satisfaction...
October 2016: Journal of Indian Prosthodontic Society
Aradhana Nagarsekar, Ridhima Gaunkar, Meena Aras
OBJECTIVE: This survey was undertaken to assess dentist's opinion regarding the occurrence and pattern of food impaction in relation to fixed partial denture (FPD) prostheses, its commonly observed consequences, factors contributing to it, and its management. METHODS: A descriptive survey was conducted on a sample size of 150 dental practitioners. The pro forma consisted of informed consent, demographic information, and questionnaire. The results were tallied and quantitative analysis was performed to obtain the descriptive statistics for the data using SPSS version 20...
October 2016: Journal of Indian Prosthodontic Society
Raquel Castillo-Oyagüe, Carmen Perea, María-Jesús Suárez-García, Jaime Del Río, Christopher D Lynch, Arelis Preciado
OBJECTIVES: To validate the 'Quality of Life related to function, aesthetics, socialization, and thoughts about health-behavioural habits (QoLFAST-10)' questionnaire for assessing the whole concept of oral health-related quality of life (OHRQoL) of implant-supported fixed partial denture (FPD) wearers. METHODS: 107 patients were assigned to: Group 1 (HP; n=37): fixed-detachable hybrid prostheses (control); Group 2 (C-PD, n=35): cemented partial dentures; and Group 3 (S-PD, n=35): screwed partial dentures...
October 13, 2016: Journal of Dentistry
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
J E Creeth, S A Kelly, C González-Cabezas, R Karwal, E A Martinez-Mier, R J M Lynch, M L Bosma, D T Zero
OBJECTIVES: The influence of toothbrushing duration and dentifrice quantity on fluoride efficacy against dental caries is poorly understood. This study investigated effects of these two oral hygiene factors on enamel remineralisation (measured as surface microhardness recovery [SMHR]), enamel fluoride uptake (EFU), and net acid resistance (NAR) post-remineralisation in a randomized clinical study using an in situ caries model. METHODS: Subjects (n=63) wore their partial dentures holding partially demineralized human enamel specimens and brushed twice-daily for two weeks, following each of five regimens: brushing for 120 or 45s with 1...
October 4, 2016: Journal of Dentistry
Mike Skramstad, Dennis J Fasbinder
Clinical application of zirconia has been expanding due to the high strength properties it offers. Initial use of zirconia was as a coping or substructure material replacing cast metal. More recent formulations have been introduced for monolithic zirconia contour designs. New chairside computer-aided design and computeraided manufacturing (CAD/CAM) technology has made it possible for dentists to deliver 3-unit bridges in a single appointment. This case report will present such a clinical application.
October 2016: Compendium of Continuing Education in Dentistry
Gregory Polyzois, Panagiotis Lagouvardos, Josip Kranjcic, Denis Vojvodic
PURPOSE: The aim of this study was to investigate through a questionnaire the knowledge, attitudes and possible differences in the use of flexible RPDPs among dentists in Greece and Croatia. MATERIAL AND METHODS: A questionnaire of 16 questions was originally created in English, translated into Greek and Croatian language following a two way translation and tested for apprehension, precision, clarity and homogeneity by a number of native English speaking Greek and Croatian dentists...
December 2015: Acta Stomatologica Croatica
Mohammed Assayed Mousa, Edward Lynch, Mohd G Sghaireen, Abdalwhab M A Zwiri, Osama A Baraka
PURPOSE: To evaluate the influence of time on masticatory efficiency and muscular activity during mastication of different types of test foods in participants fitted with a lower bilateral free-end saddle removable partial denture (RPD) with wide or narrow teeth. METHODS: Thirty-six participants consented to undergo evaluation of their masticatory efficiency and recording of their muscular activity, while they wore an RPD with a unified bilateral design, during mastication of different types of test foods...
September 29, 2016: International Dental Journal
Alexander M Won, Patti Montgomery, Ruth Aponte-Wesson, Mark Chambers
This clinical report describes the fabrication of an implant-supported and magnet-retained combination oral-nasal prosthesis for a patient with a midline midfacial defect. The patient had undergone a total rhinectomy and partial maxillectomy as part of his cancer treatment. The nasal prosthesis was retained on the face by a magnet attached to the implant-supported maxillary denture, resulting in improved appearance and the recovery of speech, mastication, and swallowing functions.
September 22, 2016: Journal of Prosthetic Dentistry
Joe Mathew, Byju P Kurian, Biju Philip, Sunil Mohammed, Preetha Menon, Rajan S Raj
INTRODUCTION: Superior adhesive strength in luting agents is of paramount significance in fixed partial denture success. In this in vitro study five cements were tested for retentive qualities, using both lathe-cut and hand-prepared specimens. MATERIALS AND METHODS: A total of 104 freshly extracted tooth specimens were prepared. Seventy of them were lathe-cut and 30 specimens were hand-prepared to simulate clinical conditions. Five different cements were tested, which included a compomer, a composite, a zinc phosphate, and 2 glass-ionomer luting cements...
2016: Journal of Contemporary Dental Practice
R Sh Gvetadze, A N Fedorovsky, L S Kozlova, Yu Yu Shirokov
Jaw fragment with complete absence of 3 teeth in the chewing area was simulated with masticatory loads corresponding to different types of antagonists: full dentures, partial dentures, intact teeth, implant-refained restavations. Simulated consoled elements of different lengths and sizes of dental implants. The analysis of the stress-deformation state of the teeth construction in the ANSYS program. As a result, it was found that with increasing length of the cantilever element 2 times - stress in the bone grows almost linearly...
2016: Stomatologii︠a︡
Reza Shahmiri, Raj Das
PURPOSE: The aim of this study was to investigate the effect of different matrix designs on resilient attachment on an implant-assisted removable partial denture (IARPD) using finite element analysis (FEA). MATERIALS AND METHODS: A laser scanner was used to extract the geometrical data of a human partially edentulous mandible. A 12-mm-long and 4.8-mm-diameter-wide implant was modeled, and two types of intradental attachment of snap fastener principle (elliptical) and resilient attachment (titanium) matrices were modeled along with tooth roots and periodontal ligaments...
September 2016: International Journal of Oral & Maxillofacial Implants
Hiromori Kobari, Nobuhiro Yoda, Junning Chen, Tetsuo Kawata, Keiichi Sasaki
PURPOSE: The aims of this study were to develop a device for in vivo measurement of three-dimensional (3D) loads on implants and to investigate the effects of implant configuration on the load distribution under a three-unit fixed partial denture (FPD). MATERIALS AND METHODS: A 67-year-old female patient with three implants (in the mandibular left second premolar, first molar, and second molar regions) was recruited. Four implant configurations for a three-unit FPD depending on the number and position of the implants were considered in this study...
September 2016: International Journal of Oral & Maxillofacial Implants
Zhipeng Liao, Nobuhiro Yoda, Junning Chen, Keke Zheng, Keiichi Sasaki, Michael V Swain, Qing Li
This paper aimed to develop a clinically validated bone remodeling algorithm by integrating bone's dynamic properties in a multi-stage fashion based on a four-year clinical follow-up of implant treatment. The configurational effects of fixed partial dentures (FPDs) were explored using a multi-stage remodeling rule. Three-dimensional real-time occlusal loads during maximum voluntary clenching were measured with a piezoelectric force transducer and were incorporated into a computerized tomography-based finite element mandibular model...
September 15, 2016: Biomechanics and Modeling in Mechanobiology
Aikaterini Tsaira, Panagiotis Karagiannidis, Margarita Sidira, Spyros Kassavetis, Dimitris Kugiumtzis, Stergios Logothetidis, Olga Naka, Argirios Pissiotis, Konstantinos Michalakis
Removable complete and partial dentures are supported by the residual alveolar ridges consisting of mucosa, submucosa, periosteum, and bone. An understanding of the biomechanical behavior of the oral mucosa is essential in order to improve the denture-bearing foundations for complete and partially edentulous patients. The purpose of this paper was to examine the biomechanical behavior of the soft tissues supporting a removable denture and develop a model for that reason. Keratinized oral mucosa blocks with their underlying bone were harvested from the maxillary palatal area adjacent to the edentulous ridges of a cadaver...
2016: Frontiers in Physiology
Mohammed M Abd El-Khalik, Nesreen H El Mekawy, Sally S El-Kasaby
PURPOSE: The objective of this study was radiographic assessment of the premolar teeth abutments alveolar bone resorption in mandibular Kennedy Class I removable partial denture (RPD) utilizing the broad stress distribution philosophy, either designed with multiple circlet clasp or compound Aker clasp. MATERIALS AND METHODS: Twelve patients were enrolled for this study with upper completely edentulous arch against mandibular Kennedy Class I ridges posterior to the second premolar...
July 2016: Journal of Indian Prosthodontic Society
Rami Shurbaji Mozayek, Mohammad Yamen Shurbaji Mozayek, Mirza Allaf, Mohammad Bassam Abouharb
CONTEXT AND AIMS: Long span is seen in many clinical situations; treatment planning options of these cases are difficult and may require: Fixed partial denture (FPD), removable partial denture, or implant supported prostheses. Each option has its own disadvantages: Mechanical, patient relief, and cost, respectively. This article will evaluate the stress distribution of another treatment option, which is adding a single supporting implant to the FPD using three-dimensional (3D) finite element analysis...
July 2016: Journal of Indian Prosthodontic Society
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