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dental AND occlusion

Reilly J de Groot, Jan-Willem Wetzels, Matthias A W Merkx, Antoine J W P Rosenberg, Anton F J de Haan, Andries van der Bilt, Jan H Abbink, Caroline M Speksnijder
BACKGROUND: Chewing ability is often compromised in patients with oral cancer. The aim of this study was to identify which factors affect masticatory performance in these patients. METHODS: Patients with primary oral cancer were assessed for up to 5 years after primary treatment. Healthy controls were assessed once. A mixed-model analysis was performed, with masticatory performance as outcome measure. RESULTS: A total of 123 patients were included in the study...
December 15, 2018: Head & Neck
Rafaela Scariot, Paola Corso, Briana Gonsar, Navenett Gill, Paula Cristina Trevillato, Anitha Potluri, Alexandre Rezende Vieira
The aim of this study was to investigate the association between condylar bone morphological characteristics with occlusal conditions. Besides the study will compare the tomography images with the real condition in 122 temporomandibular joints from 61 skulls. The occlusal conditions were evaluated by number of teeth missing, measurement of overjet and overbite, in millimeters, and presence or absence of crossbite, openbite and dental rotation. The condylar bone morphological conditions were classified in five types (normal, presence of erosion, presence of osteophytes, flattening and/or deformation)...
December 14, 2018: Surgical and Radiologic Anatomy: SRA
Susanne S Scherrer, Mustapha Mekki, Claude Crottaz, Michael Gahlert, Eric Romelli, Laurine Marger, Stéphane Durual, Eric Vittecoq
OBJECTIVES: To provide fractographic analysis of clinically fractured zirconia implants recovered with their cemented crown. To calculate bending moments, corresponding stress and crack onset location on the implant's fracture surface using a mathematical model integrating spatial coordinates of the crown-implant part and occlusal loading obtained from 2D and 3D images. METHODS: 15 fractured zirconia implants parts (11 posterior and 4 anterior) with their all- ceramic crowns still cemented on it were recovered...
December 11, 2018: Dental Materials: Official Publication of the Academy of Dental Materials
Terence E Donovan, Riccardo Marzola, Kevin R Murphy, David R Cagna, Frederick Eichmiller, James R McKee, James E Metz, Jean-Pierre Albouy, Mathias Troeltzsch
PROBLEM: There are countless numbers of scientific studies published in countless scientific journals on subjects related to restorative dentistry. PURPOSE: The purpose of this article is to review pertinent scientific studies published in 2017 on topics of interest to restorative dentists. METHODS AND MATERIALS: The authors, considered to be experts in their disciplines searched the scientific literature in 7 different areas (prosthodontics, periodontics, dental materials, occlusion and temporomandibular disorders, sleep-disordered breathing, oral medicine and oral and maxillofacial surgery and dental caries)...
December 2018: Journal of Prosthetic Dentistry
Giovanna Speranza Zabeu, Rafael Massunari Maenossono, Caren Roberta Scarcella, Letícia Ferreira Freitas Brianezzi, Regina Guenka Palma-Dibb, Sérgio Kiyoshi Ishikiriama
OBJECTIVES: The aim of this in vitro study was to evaluate the bonding strength of non-simplified dentin bonding systems (DBS) to dentin irradiated with a diode laser (970 nm) immediately and after 12 months of water storage following either primer or bond application. MATERIAL AND METHODS: The experimental design included three different factors: DBS type [AdperTM Scotchbond Multipurpose (MP) and Clearfil™ SE Bond (CSE)], irradiation [without irradiation - control (C), irradiation after primer application (AP), and irradiation after bond application (AB)], and time [initial (I) and after 12 months of water storage (12 m)]...
December 10, 2018: Journal of Applied Oral Science: Revista FOB
Liana Todor, Ruxandra Ilinca Matei, Gabriela Muţiu, Anca Porumb, Gabriela Ciavoi, Emilia Albiniţa Cuc, Adriana Ţenţ, Daniela Domocoş, Ioana Scrobotă, Sergiu Andrei Todor, Mihaela Cristiana Coroi
The article presents aspects of crown and root morphology of the superior wisdom teeth, aiming to several parameters: size, shape crown and occlusal surface, number, topography and orientation of the roots in order to determine which the most common morphological types are. For this purpose, the upper wisdom teeth were collected. According to studies, the dominant form of the dental crown is parallelepipedic, the rectangular or parallelogram shape of the occlusal surface has large mesial and distal-oriented sides...
2018: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
Traian Mihail Comănescu, Iancu Emil Pleşea, Lucian Paul Dragomir, Mihai Raul Popescu, Răzvan Mihail Pleşea, Constantin Daniel Uscatu, Mircea Sebastian Şerbănescu, Mihaela Cezarina Hîncu, Marian Cărămizaru
AIM: Occlusal trauma causes major modifications of the coverage periodontium, which in turn reflect on the dental unit. The aim of the present study is to evaluate some of the morphological modifications occurred in the marginal periodontium surrounding teeth affected by occlusal trauma. MATERIALS AND METHODS: Fragments of marginal periodontium coming from 51 patients with occlusal trauma were processed using classical histological techniques (formalin fixation and paraffin embedment) and stained with Hematoxylin-Eosin (HE), Masson's trichrome and anti-CD34 antibody immunostaining, in order to highlight the epithelial and connective tissue changes of gingival mucosa...
2018: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
Marian Cărămizaru, Iancu Emil Pleşea, Lucian Paul Dragomir, Mihai Raul Popescu, Constantin Daniel Uscatu, Mircea Sebastian Şerbănescu, Dragoş Ovidiu Alexandru, Traian Mihail Comănescu
AIM: In the general economy of the stomatognathic system functionality, the occlusal function has an important role, meaning both the dental-dental reports and the dynamic reports interarch-interarch. Because of the interrelationships and inter-dependency that govern the functioning of the biological systems, a pathological change affecting a component of the stomatognathic system produces impaired functioning of the others. The aim of the present study is to assess the morphological changes occurred in the dental pulp components of teeth affected by occlusal trauma...
2018: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
Chen, Szu-Han, Chun-Ying Yu, Tong-Mei Wang, Tsung-Chieh Yang, Li-Deh Lin
No abstract text is available yet for this article.
October 2018: Journal of Indian Prosthodontic Society
Cinzia Maspero, Andrea Fama, Guido Galbiati, Lucia Giannini, Laima Kairyte, Luca Bartorelli, Marco Farronato
OBJECTIVE: Canine impaction is a dental anomaly involving intraosseous displacement of the unerupted tooth. This situation is of significant importance causing orthodontic, surgical and interceptive problems. Trauma in the incisor area is a possible cause of the displacement of the tooth bud of the permanent canine resulting in the deviated eruption path. The aim of this article is to present two clinical cases with diagnosis of maxillary canine displacement and impaction in the incisor region after a traumatic injury during childhood, discussing treatment possibilities and outcomes achieved after orthodontic treatment...
2018: Stomatologija
Francine Benetti, André Luiz Fraga Briso, Luciana Louzada Ferreira, Marina Carminatti, Larissa Álamo, Edilson Ervolino, Eloi Dezan-Júnior, Luciano Tavares Angelo Cintra
Bleaching gel containing hydrogen peroxide (H2O2) cause damages in pulp tissue. This study investigated the action of a topical anti-inflammatory, the Otosporin®, in rats' bleached teeth with the null hypothesis of which the Otosporin® is no able to minimize the pulp inflammation that bleaching gel generates. The rat's molars were divided into groups: BLE: bleached (35% H2O2 concentration /single application of 30 min); BLE-O: bleached followed by Otosporin® (10 min); and control: placebo gel. In the second day after dental bleaching, the rats were killed, and the jaws were processed for hematoxylin-eosin and immunohistochemistry analysis for tumor necrosis factor alpha (TNF-α), interleukin (IL)-6 and IL-17...
November 2018: Brazilian Dental Journal
Anelise Fernandes Montagner, Francoise Helene van de Sande, Clecila Müller, Maximiliano Sérgio Cenci, Alexandre Henrique Susin
This retrospective study aimed to compare the annual failure rate (AFR), reasons for failure and factors influencing survival of posterior and anterior composite restorations placed by undergraduate students. Composite restorations placed by undergraduate students were evaluated. The restorations should be in occlusion, with at least one adjacent tooth; and patients should have been present for check-up, with at least 1 annual recall. The investigation was performed in two separate analysis: 1) dental electronic records of 100 patients (n=333 restorations) were selected to assess factors influencing survival; 2) clinical evaluation of 30 patients by examining restorations (n=123) to assess clinical characteristics and failure type distribution...
November 2018: Brazilian Dental Journal
João Paulo Mendes Tribst, Amanda Maria de Oliveira Dal Piva, Marcela Moreira Penteado, Alexandre Luiz Souto Borges, Marco Antonio Bottino
The aim of this study was to evaluate stress distribution in an occlusal veneer according to the restorative material, restoration thickness, and cement layer thickness. A tridimensional model of a human maxillary first molar with an occlusal veneer preparation was constructed using a modeling software of finite element analysis. The model was replicated 9 times to evaluate the factors: restoration thickness (0.6, 1.2, and 1.8 mm) and cement layer thickness (100, 200, and 300 μm). Then, each model received different restorative materials (High Translucency Zirconia - [YZHT], Lithium Disilicate - [LD], Zirconia Reinforced Lithium Silicate - [ZLS], Feldspathic - [F], and Hybrid Ceramic - [HC]), totaling forty-five groups...
November 29, 2018: Brazilian Oral Research
Eric Leroux, Stéphanie Leroux, Frédéric Maton, Xavier Ravalec, Olivier Sorel
OBJECTIVES: The present study aimed to assess the influence of dental occlusion on body posture and the competitive performance of young elite rowers. METHOD: Dental occlusion disturbance devices were used to simulate dental malocclusions. We assessed the influence of malocclusion on the body balance, paravertebral muscle contraction symmetry, and muscular power of young elite rowers. A nonparametric permutation test for repeated measures ANOVA, a Cochran's Q test for paired data and a paired Student's t-test were used in order to statistically evaluate the influence of artificial occlusal disturbance on each factor...
November 29, 2018: Clinics
Do-Keun Kim, Joohon Sung, Yun-Mi Song, Eung-Min Kim, Young Ho Kim, Seung-Hak Baek
OBJECTIVES: To investigate the difference in heritability of craniofacial skeletal and dental characteristics between hypodivergent and hyperdivergent patterns. MATERIALS AND METHODS: 53 Korean adult monozygotic (MZ) and dizygotic (DZ) twins and their siblings were divided into a hypodivergent group (Group 1, SN-MP < 35°, 17 MZ pairs; 11 DZ and sibling [DS] pairs of the same gender) and hyper-divergent group (Group 2, SN-MP > 35°, 16 MZ pairs; 9 DS pairs of the same gender)...
December 5, 2018: Angle Orthodontist
Aida Mulic, Inga B Árnadòttir, Torbjòrg Jensdottir, Simen E Kopperud
Dental erosive wear (DEW) is common among children and adolescents, and a survey of Icelandic children showed that 30.7% of 15-year-olds were diagnosed with the condition. Objective. To gain knowledge about dental practitioners' experiences, opinions, and treatment decisions. Materials and Methods . A precoded questionnaire, previously used among Norwegian dentists, was sent electronically to all dentists in Iceland ( n = 341). Results. The response rate was 64.2%, and 58% of dentists were male. More than half of the clinicians (54%) thought that prevalence had increased the last 10-15 years, and 67% reported it to be more common in male...
2018: International Journal of Dentistry
Saba Zahid, Abdul Samad Khan, Aqif Anwar Chaudhry, Sarah Ghafoor, Qurat Ul Ain, Ahtasham Raza, Muhammad Imran Rahim, Oliver Goerke, Ihtesham Ur Rehman, Asma Tufail
Development of a guided occlusive biodegradable membrane with controlled morphology in order to restrict the ingrowth of epithelial cells is still a challenge in dental tissue engineering. A bilayer membrane with a non-porous upper layer (polyurethane) and porous lower layer (polycaprolactone and bioactive glass composite) with thermoelastic properties to sustain surgery treatment was developed by lyophilization. Morphology, porosity, and layers attachment were controlled by using the multi-solvent system. In vitro and in vivo biocompatibility, cell attachment, and cell proliferation were analyzed by immunohistochemistry and histology...
December 3, 2018: Journal of Biomaterials Applications
K A Kolawole, M O Folayan, H O Agbaje, T A Oyedele, N K Onyejaka, E O Oziegbe
AIM: To determine the: prevalence of oral habits in children aged 1-12 years in Ife Central Local Government Area of Osun State Nigeria; association between oral habits and malocclusion in children aged 6-12 years; differences in orthodontic treatment needs of children with and without oral habits and the effect of digit sucking severity on occlusal profile. METHODS: This was a cross-sectional study that collected data through a household survey. Information collected included the age, gender, and oral habits of study participants...
November 30, 2018: European Archives of Paediatric Dentistry: Official Journal of the European Academy of Paediatric Dentistry
Naoaki Saito, Akinori Funayama, Yoshiaki Arai, Daisuke Suda, Yoshiyuki Takata, Tadaharu Kobayashi
Background: The free vascularized fibula flap presents many advantages such as sufficient length of the bony segment, good vascularization, better quality of the bone, and a long vascular pedicle, but it is also associated with some disadvantages with regard to prosthetic rehabilitation because of its limited height. Improvement in bone height is necessary for ideal dental implant treatment of reconstructed mandibles. Case presentation: For two squamous cell carcinoma patients, mandibular bone reconstruction was performed secondarily with the peroneal flap after tumor resection...
December 2018: Maxillofacial Plastic and Reconstructive Surgery
Ruizhi Yin, Min-Ho Lee, Tae-Sung Bae, Kwang-Yeob Song
This study was to evaluate the load bearing capacity of monolithic dental zirconia crowns, and the effect of surface finishing on fracture strength. (1) The zirconia plates were divided into 5 groups and polished by various types of polishing bur, every specimen was analyzed by surface roughness testing, and X-ray diffraction (XRD). (2) The zirconia crowns were classified into 4 groups corresponding to different surface treatments and thickness. All the crowns were cemented and subjected to a load of 7 kg for 5 min...
December 1, 2018: Dental Materials Journal
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