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International Journal of Prosthodontics

Mahmoud E Elbashti, Yuka I Sumita, Shajidan Kelimu, Amel M Aswehlee, Shataer Awuti, Mariko Hattori, Hisashi Taniguchi
PURPOSE: To identify trends in the application of various types of digital technologies in maxillofacial prosthetics by identifying these digital technologies and their characteristics and reviewing the prevalence of applied digital technologies and their recent trends in the maxillofacial prosthetics literature. MATERIALS AND METHODS: Five leading peer-reviewed prosthodontics journals were manually searched for maxillofacial prosthetics articles on the use of digital technologies published from January 2008 to December 2017...
October 29, 2018: International Journal of Prosthodontics
Daniel Cerny, Steven Eckert, Radek Mounajjed
PURPOSE: To evaluate survival rates of adhesive post-endodontic buildups made using composite resin and prefabricated quartz fiber posts. MATERIALS AND METHODS: This retrospective study included all buildups placed between January 1, 2008, and December 31, 2012, by a single skilled operator using a single-adhesive system and dual-curing cement. Final restorations included direct composites, various types of crowns, and fixed partial dentures. During recall, teeth were inspected by four different dentists, and survival analysis was performed using Kaplan-Meier test...
October 29, 2018: International Journal of Prosthodontics
Marie-Joséphine Crenn, Aurélie Benoit, Jean-Pierre Attal, Olivier Fromentin
PURPOSE: To determine whether selective laser melting (SLM) is suitable for the fabrication of dental superstructures. MATERIALS AND METHODS: Mechanical properties of Ti-6Al-4V, manufactured with SLM or numerically controlled milling, were evaluated and compared. RESULTS AND CONCLUSION: Both groups showed a mechanical strength greater than 500 MPa and an elongation greater than 2%, as required by the International Organization for Standardization 22674 standard...
November 2018: International Journal of Prosthodontics
Duygu Karasan, M Barış Güncü, Bahadır Ersu, Şenay Canay
PURPOSE: To evaluate the biomechanical behavior of implants with different neck designs. MATERIALS AND METHODS: Finite element models of implants with two different neck designs (OsseoSpeed EV and OsseoSpeed Profile EV) were generated. Implants and abutments were subjected to buccally and lingually directed 30-degree oblique loads of 200 N. RESULTS: Under buccally angulated load, the Profile implant model showed lower minimum principal stress when compared to the standard implant model (-63...
November 2018: International Journal of Prosthodontics
Christophe Bou, Audrey Say Liang Fat, Erwan de Mones Del Pujol, Valerie Plaire, Adrien Naveau
When soft palate defects lead to palatal insufficiency, the patient's quality of life is affected by difficulties swallowing, hypernasality, and poor intelligibility of speech. If immediate surgical reconstruction is not an option, the patient may benefit from the placement of a rigid obturator prosthesis. Unfortunately, the residual muscle stumps are often unable to adequately move this stiff and inert obturator to properly restore the velopharyngeal valve function. In the present case history report, a new membrane obturator concept is described: Using a dental dam to compensate for the soft palate defect, swallowing and speech were significantly improved...
November 2018: International Journal of Prosthodontics
Paolo Pesce, Francesco Pera, Diego Bruno, Maria Menini
PURPOSE: To estimate implant survival and peri-implant bone resorption around long vs normal-length implants in full-arch immediate loading rehabilitation of maxillary arches of low bone quality (D4). MATERIALS AND METHODS: A total of 45 patients received two mesial normal-length (10 to 15 mm) or longer (18 to 20 mm) implants and two long (18 to 20 mm) distally tilted implants. Differences in bone resorption at 24 months were assessed using the Mann-Whitney U Test...
November 2018: International Journal of Prosthodontics
Adolfo Di Fiore, Paolo Vigolo, Lorenzo Graiff, Edoardo Stellini
PURPOSE: To evaluate patient perception and operating time of digital (DW) and conventional (CW) workflows for the rehabilitation of a screw-retained, single-implant crown. MATERIALS AND METHODS: A convenience sample of 10 patients with single implants in posterior sites was recruited for treatment with screw-retained single crowns, fabricated with either a DW or a CW protocol. Operating time and clinical adjusting time were recorded with a stopwatch, and patient preference and self-perception of the esthetic outcome were evaluated with a visual analog scale...
November 2018: International Journal of Prosthodontics
Takuro Baba, Takaharu Goto, Keiko Fujimoto, Hideki Suito, Kazutomo Yagi, Kan Nagao, Tetsuo Ichikawa
PURPOSE: To clarify the effect of geniohyoid (GH) muscle morphology and related function on masticatory ability using a decision-tree analysis. MATERIALS AND METHODS: A total of 103 participants were enrolled. A cross-sectional area (CSA) of the GH muscle, neck circumference, body mass index, tongue pressure, jaw opening strength, and masticatory ability score were measured. The CSA of the GH muscle was selected as an independent variable for the first layer of the decision tree, with masticatory score as the dependent variable...
November 2018: International Journal of Prosthodontics
Torsten Jemt
PURPOSE: To report retro-prospective, long-term data on the prevalence of implant failures related to maxillary and mandibular arches and to different implant surfaces in a large number of edentulous patients. MATERIALS AND METHODS: Altogether, 3,493 and 1,092 edentulous arches were consecutively treated with implants with turned (1986-2002) or moderately rough (2003-2015) surfaces, respectively, during two time periods at one referral clinic. All implant failures were consecutively identified during routine follow-up, and a multivariate logistic regression analysis was performed to analyze implant failure related to arch and implant surface...
November 2018: International Journal of Prosthodontics
Amel M Aswehlee, Mahmoud E Elbashti, Mariko Hattori, Yuka I Sumita, Hisashi Taniguchi
PURPOSE: To evaluate the feasibility and accuracy of noncontact three-dimensional (3D) digitization systems for capturing facial defects. MATERIALS AND METHODS: A stone model of a facial defect was digitized using high-accuracy industrial computed tomography as a reference scan. The model was also scanned using four different types of noncontact 3D digitizers: a laser beam light-sectioning technology with camera system and three different stereophotogrammetry systems...
November 2018: International Journal of Prosthodontics
Elisabetta Bellia, Luca Boggione, Mara Terzini, Carlo Manzella, Guilio Menicucci
PURPOSE: This preliminary case series report sought to evaluate the efficacy of an immediate loading protocol for mandibular overdentures retained by two mini-implants with the outcome measures patient satisfaction, masticatory cycles, and masticatory efficiency at 1 year. MATERIALS AND METHODS: A convenience sample of 11 patients was recruited, and the clinical protocol consisted of immediately loading two mini-implants (10 mm long and 2.4 mm or 2.9 mm in diameter) via a mandibular overdenture connection with Locator attachments...
November 2018: International Journal of Prosthodontics
Fatih Cabbar, Muammer Çağrı Burdurlu, Gonca Duygu Çapar, Hakkıcan Tekin, Ceyda Özçakır Tomruk
PURPOSE: The aim of this study was to assess the frequency and location of positive radiographic findings in edentulous patients and to evaluate the oral health-related quality of life (OHRQoL) and complacency of patients with positive radiologic findings. MATERIALS AND METHODS: A total of 1,349 asymptomatic edentulous patients were retrospectively evaluated using a digital panoramic system for the presence of retained root fragments, impacted teeth, foreign bodies, radiolucencies, radiopacities, mental foramen at or near the alveolar crest, and maxillary sinus pneumatization...
November 2018: International Journal of Prosthodontics
Michelle Chew, Geoffrey Tompkins, Andrew Tawse-Smith, J Neil Waddell, Sunyoung Ma
PURPOSE: To assess the amount of contamination remaining on used healing abutments after autoclaving and to compare the effectiveness of two additional decontamination methods. MATERIALS AND METHODS: After autoclaving, a total of 120 used healing abutments were divided equally into three groups: used healing abutments after autoclaving only (group 1); used healing abutments after autoclaving and air-flow polishing (Master Piezon, EMS) using erythritol powder (AIR-FLOW PLUS, EMS) (group 2); and used healing abutments after autoclaving and sodium hypochlorite (NaOCl; 25 g/L) treatment (group 3)...
November 2018: International Journal of Prosthodontics
Sachiko Maeda, Mari Nakaya
This case history report highlights the possibilities and limitations of orthodontic molar intrusion using temporary anchorage devices (TADs) in the prosthodontic management of patients with compromised interarch distance.
November 2018: International Journal of Prosthodontics
Karen R Bennie, Meriting G Thokoane, C Peter Owen
PURPOSE: To assess the illuminant metamerism of three different pigments used for maxillofacial prostheses under three different illumination sources and to standardize subjective shade-matching and observation protocols. MATERIALS AND METHODS: Nine silicone shade tabs were constructed for three volunteers who had light, medium, and dark skin tones using make-up, oil paint, or silicone pigments (three shade tabs per volunteer). A shade recipe was recorded during session one, and further tabs were constructed by following the recipe at two subsequent sessions...
November 2018: International Journal of Prosthodontics
France Foucher, Amélie K Mainjot
Functional and esthetic oral rehabilitation of young patients affected by ectodermal dysplasia is traditionally performed with direct composite restorations, which encounter various limitations. However, recent advances in computer-aided design/computer-assisted manufacturing (CAD/CAM) composites have led to the introduction of high-performance materials. In the present case report, a 9-year-old patient was treated with 20 CAD/CAM partial and peripheral restorations in polymer-infiltrated-ceramic-network material to restore deciduous and permanent teeth...
November 2018: International Journal of Prosthodontics
Patrícia Krieger Grossi, Caroline Hoffmann Bueno, Mariana Álvares de Abreu Silva, Eduardo Piza Pellizzer, Márcio Lima Grossi
PURPOSE: To compare the prevalence of physical and sexual abuse in women with temporomandibular disorders (TMD) vs women without TMD. METHODS: Forty women (age range 16-45 years) with idiopathic TMD were selected from the Occlusion Clinic at the Pontifical Catholic University of Rio Grande do Sul Faculty of Dentistry and were compared to 40 TMD-free women within the same age range. The Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) Axes I and II and the Sexual Abuse History Questionnaire (S/PAHQ) were used to collect data...
November 2018: International Journal of Prosthodontics
Koichiro Kamei, Tomoya Gonda, Toshihito Takahashi, Yoshinobu Maeda
PURPOSE: The purpose of this study was to determine the optimal positioning of implants for maxillary implant-supported overdentures (MIODs) using finite element analysis (FEA). MATERIALS AND METHODS: Three-dimensional (3D) finite element models were built incorporating the maxilla, mucous membrane, removable denture, and artificial teeth using FEA software. Four models were prepared: one without an implant; one with two implants in the region of the lateral incisor; one with two implants in the first premolar region; and one with four implants in the lateral incisor and first premolar regions...
November 2018: International Journal of Prosthodontics
Adrien Naveau, Christophe Bou, Arun Sharma
PURPOSE: To study the evolution of recent topics in maxillofacial prosthetics (MP) research. MATERIALS AND METHODS: Science mapping analyses were used to measure bibliometric similarities among articles extracted from the Web of Science from the last three decades. RESULTS AND CONCLUSION: Keyword co-occurrence highlighted the rise of computer-aided design/computer-assisted manufacturing, mandibular reconstruction, and extraoral prostheses during the last decade...
November 2018: International Journal of Prosthodontics
Se-Mok Oh, Jin-Wook Kim, So-Young Choi, Du-Hyeong Lee
The fibular free flap (FFF) approach is the preferred option for reconstruction of segmental mandibular deficiencies. Fixed dental prostheses are recommended for patients who have undergone FFF jaw surgery to improve quality of life, but treatment of these patients with an implant-supported prosthesis is challenging because of the thin bone and thick soft tissue in the fibula. This case history reports the use of a bone-level implant guide fabricated with a computer-aided system and milled customized long abutments for implant placement and prosthodontic procedures...
November 2018: International Journal of Prosthodontics
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