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Journal of Dentistry

Michael Raedel, Heinz-Werner Priess, Steffen Bohm, Barbara Noack, Yvonne Wagner, Michael H Walter
OBJECTIVES: The aim of this study was to evaluate tooth loss after periodontal treatment. METHODS: The data was collected from the digital database of a major German national health insurance company. Periodontal treatment was the intervention in the treatment group. Kaplan-Meier survival analyses on the patient level with the primary outcome extraction were carried out over four years. A control group without treatment was matched and analysed. Differences were tested with the Log-Rank-test...
November 6, 2018: Journal of Dentistry
T T Maske, A C C Hollanders, N K Kuper, E M Bronkhorst, M S Cenci, M C D N J M Huysmans
OBJECTIVES: This study investigated the influence of very small gaps in secondary caries (SC) development and additionally linked the threshold gap size with the caries activity level from volunteers. METHODS: For 21 days, 15 volunteers wore a modified occlusal splint loaded with dentin-composite samples restored with different interfaces: bonded (B = samples restored with complete adhesive procedure), no-bonded (NB = restored with composite resin without adhesive procedure), and 30, 60 and 90 µm (no adhesive procedure and with intentional gap)...
November 2, 2018: Journal of Dentistry
Seung-Hoon Han, Alireza Sadr, Yasushi Shimada, Junji Tagami, Sung-Ho Park
OBJECTIVES: The purpose of this study was to compare the internal adaptation of resin composite restorations in Class I cavities with or without an intermediate layer, and to identify the relationships between the internal adaptation and the polymerization shrinkage parameters of the layer material. METHODS: Class I cavities prepared in human third molars were treated with a one-step self-etch adhesive (G-Premio Bond, GC). In the control group, Tetric-EvoCeram Bulk-Fill (TBF, Ivoclar Vivadent) was placed using the bulk-fill technique and then light-cured...
November 1, 2018: Journal of Dentistry
Ferreira Sérgio Diniz, Martins Carolina Castro, Antonucci Sergio Amaral, Vieira Thais Ribeiral, Albuquerque Bárbara Nascimento, Cota Luís Otávio Miranda, Esteves Lima Rafael Paschoal, Costa Fernando Oliveira
OBJECTIVES: To evaluate the scientific evidence from observational studies concerning the risk of peri-implantitis development in periodontally-compromised patients. SOURCE: The search was carried out in Medline, via PubMed, and the Cochrane Library up to March 2018 STUDY SELECTION: : Clinical studies reporting data on periodontitis and peri-implantitis, with confirmed diagnosis of peri-implantitis based on specific parameters (peri-implant probing depth and peri-implant bleeding on probing) and with evaluations of implants with at least 1 year of function were selected...
November 1, 2018: Journal of Dentistry
A Cawley, S Golding, A Goulsbra, M Hoptroff, S Kumaran, R Marriott
OBJECTIVES: To assess the effects of enzymes and proteins in toothpastes to boost salivary defences and reduce oral bacteria growth and viability. METHODS: An in vitro study to measure levels of hypothiocyanite in saliva after treatment with a toothpaste containing enzymes and proteins (colorimetric assay). A randomised, crossover in vivo study measuring, with biochemical assays, the effect of a toothpaste containing enzymes and proteins on the levels of hydrogen peroxide and lysozyme in saliva...
October 30, 2018: Journal of Dentistry
Christian Graetz, Freda Ostermann, Sirka Woeste, Sonja Sälzer, Christof E Dörfer, Falk Schwendicke
OBJECTIVES: This study assessed the survival and maintenance needs of splinted teeth in periodontitis patients. METHODS: Patients receiving active and supportive periodontal treatment involving teeth splinting in a university setting were retrospectively assessed. Tooth and splint survival and number of splint-repairs were recorded. Multilevel Cox and generalized-mixed linear regression analyses were performed. RESULTS: Fifty-seven patients with 227 splinted teeth (maxilla/mandible: 148/79) were followed over mean ± SD 11...
October 30, 2018: Journal of Dentistry
Dejan Markovic, Tamara Peric, Bojan Petrovic
OBJECTIVES: The aim of this study was to clinically examine the retention and caries-preventive effect of a glass-ionomer material for fissure sealing in newly erupted permanent molars. METHODS: A total of 1736 newly erupted permanent molars were sealed in 480 children aged 5-15 years. Sealants were evaluated yearly and recorded as "completely retained", "partially retained", or "completely lost". Teeth were also evaluated for presence of caries...
October 25, 2018: Journal of Dentistry
Annalisa Mazzoni, Tatjana Maravić, Arzu Tezvergil-Mutluay, Leo Tjäderhane, Polliana Mendes Candia Scaffa, Roda Seseogullari-Dirihan, Alberto Bavelloni, Pietro Gobbi, David H Pashley, Franklin R Tay, Lorenzo Breschi
OBJECTIVES: Matrix metalloproteinases (MMPs) are dentinal endogenous enzymes claimed to have a vital role in dentin organic matrix breakdown. The aim of the study was to investigate presence, localization and distribution of MMP-7 in sound human dentin. METHODS: Dentin was powdered, demineralized and dissolved in isoelectric focusing buffer. Resolved proteins were transferred to nitrocellulose membranes for western blotting (WB) analyses. For the zymographic analysis, aliquots of dentin protein were electrophoresed in 12% sodium dodecyl sulfate-polyacrylamide gel electrophoresis containing fluorescently labeled gelatin...
October 24, 2018: Journal of Dentistry
Daniel R Reissmann, Stefan Wolfart, Mike T John, Birgit Marré, Michael Walter, Matthias Kern, Ralf Kohal, Frank Nothdurft, Helmut Stark, Oliver Schierz, Bernd Wöstmann, Wolfgang Hannak, Torsten Mundt, Peter Pospiech, Julian Boldt, Daniel Edelhoff, Eckhard Busche, Florentine Jahn, Ralph G Luthardt, Sinsa Hartmann, Guido Heydecke
OBJECTIVES: To compare oral health-related quality of life (OHRQoL) in patients with either molar replacement by partial removable dental prostheses (PRDP) or with restored shortened dental arches (SDA) over a period of 10 years. METHODS: In this multi-center RCT, a consecutive sample of 215 patients with bilateral molar loss in at least one jaw was initially recruited in 14 prosthodontic departments. Of those patients, 150 could be randomly allocated to the treatment groups (SDA: n = 71; PRDP: n = 79), received the allocated treatment, and were available for follow-up assessments...
October 21, 2018: Journal of Dentistry
Christoph M Schoppmeier, Sonja H M Derman, Michael J Noack, Michael J Wicht
OBJECTIVES: Patients with moderate dental fluorosis often feel esthetically compromised. Aim of this RCT was to evaluate the objectively and self-assessed masking effect of resin infiltration alone or in combination with in-office bleaching on dental fluorosis in adults. METHODS: Twenty-seven patients (9 male, 18 female, 24.81 ± 3.7 yrs) with 410 fluorotic teeth (TF 1-4) were randomly assigned to a treatment (BLI) or control group (NBLI). Patients underwent in-office bleaching (25% H2 O2 ) in the BLI or a placebo bleaching (ACP gel) in the NBLI group followed by resin infiltration after two weeks...
October 18, 2018: Journal of Dentistry
Clovis Mariano Faggion, Luisiana Aranda, Nikolaos Pandis, Marco Antonio Alarcón, Karla Tatiana Diaz
OBJECTIVES: To assess the changes in the risk of bias (RoB) across different versions of the same Cochrane systematic review, and to identify characteristics of systematic reviews which may be associated with different RoB scores by means of regression analysis. METHODS: We examined changes in RoB ratings in domains of randomized controlled trials (RCTs) or controlled trials (CTs) included in original Cochrane systematic reviews and their updates published in oral health...
October 17, 2018: Journal of Dentistry
Raquel Osorio, Estrella Osorio, Fátima S Aguilera, Antonio Luis Medina-Castillo, Manuel Toledano, Manuel Toledano-Osorio
OBJECTIVE: This study aimed to evaluate the effect of silver loaded nanoparticles (NPs) application on dentin remineralization. METHODS: Polymethylmetacrylate-based NPs and silver loaded NPs (Ag-NPs) were applied on demineralized dentin surfaces. Dentin was characterized morphologically by scanning electron microscopy, mechanically probed by a nanoindenter to test nanohardness and Young modulus, and chemically analyzed by Raman spectroscopy after 24 h and 7 d of storage...
October 5, 2018: Journal of Dentistry
Wei-Hu Ye, Bing Fan, Wiley Purcell, Mohamed M Meghil, Christopher W Cutler, Brian E Bergeron, Jing-Zhi Ma, Franklin R Tay, Li-Na Niu
OBJECTIVE: To investigate the anti-biofilm efficacy of root canal irrigants in canal spaces, isthmi and dentinal tubules of root canals ex vivo. METHODS: Fifty-one single-rooted premolars, each containing an isthmus, were instrumented, autoclaved and inoculated with Enterococcus faecalis for 4 weeks. One specimen was sectioned for bacteria-specific staining to confirm the presence of biofilms using light microscopiy. The remaining specimens were randomly divided to five groups: (1) 0...
October 5, 2018: Journal of Dentistry
Matthieu Minty, Thibault Canceill, Sylvie Lê, Pauline Dubois, Oihana Amestoy, Pascale Loubieres, Jeffrey E Christensen, Camille Champion, Vincent Azalbert, Estelle Grasset, Sara Hardy, Jean-Michel Loubes, Jean-Philippe Mallet, François Tercé, Jean-Noël Vergnes, Rémy Burcelin, Matteo Serino, Franck Diemer, Vincent Blasco-Baque
OBJECTIVE: Elite athletes are prone to develop oral diseases, which could increase the risk for injuries. The aim of this study was to evaluate the oral health and the composition of oral microbiota of elite rugby players compared to the general population. METHODS: We set up a case-control study by screening 24 professional rugby players (PRG) and 22 control patients (CG) for dental and gingival examinations and performed a taxonomic analysis and a predicted functional analysis of oral microbiota...
October 5, 2018: Journal of Dentistry
M A Awad, D El Kassas, L Al Harthi, S B Abraham, K Al Khalifa, M E Khalaf, R Al Habashneh, D Bartlett
OBJECTIVES: The aim of this study was to assess the prevalence and severity of tooth wear and related risk indicators in six Arab countries. METHODS: This multicenter, multinational cross-sectional study was conducted among 2924 participants between the ages of 18-35 years old from six Arab countries. Calibrated dentists assessed tooth wear using the Basic Erosive Wear Examination Index (BEWE). Participants were also asked to complete a questionnaire that assessed their dietary and oral health habits...
September 29, 2018: Journal of Dentistry
Nicoleta Ilie
OBJECTIVES: Recent developments in glass ionomers (GI), including improved mechanical properties, allow the application of a filling without using a varnish to protect the initial setting reaction. Thus, this study aims to monitor the mechanical behavior of these new developments in comparison to traditional and clinically established GIs within one year of maturation by using generally accepted testing methodology along with a new test for determining chipping resistance. MATERIALS AND METHODS: Four GIs were characterized by assessing the variation in edge strength (ES), compressive strength (CS), Vickers hardness (HV) and indentation modulus (YHU )...
September 27, 2018: Journal of Dentistry
Walter Y H Lam, Richard T C Hsung, Leo Y Y Cheng, Edmond H N Pow
OBJECTIVES: Tooth shade is crucial to patient satisfaction in aesthetic dentistry. Two-dimensional (2D) clinical photographs have been widely used to record patients' tooth shade for creation of beautiful smile. However, in the digital workflow, 3D virtual teeth models in open file format contain only mesh information with no colour. This paper describes the mapping of colour information from the intraoral photographs onto the virtual teeth model. METHODS: Intraoral photographs of occlusal and buccal views were taken using digital single lens reflex (SLR) camera with macro lens and ring flash...
September 26, 2018: Journal of Dentistry
Andressa Goicochea Moreira, Carlos Enrique Cuevas-Suárez, Wellington Luiz de Oliveira da Rosa, Aline Oliveira Ogliari, Cesar Liberato Petzhold, Evandro Piva, Fabrício Aulo Ogliari, Giana da Silveira Lima
OBJECTIVES: This study describes the synthesis of piperonyl methacrylate (PipM) and evaluates its effect when used as coinitiator in the photoinitiated radical polymerization of experimental adhesive resins. METHODS: PipM was synthetized through an esterification reaction and characterized by FTIR and 1 H NMR spectroscopy. Adhesive resins containing camphorquinone as photoinitiator and PipM or ethyl-4-dimethyl amine benzoate (EDAB) as coinitiators were formulated...
September 22, 2018: Journal of Dentistry
Li Cao, Xianju Xie, Bo Wang, Michael D Weir, Thomas W Oates, Hockin H K Xu, Ning Zhang, Yuxing Bai
OBJECTIVES: Heat-cured resins are commonly used in orthodontics; however, there is a high incidence of caries, periodontal diseases and denture-induced stomatitis. The objectives of this study were to: (1) develop a new bioactive polymethyl methacrylate (PMMA) resin containing 2-methacryloyloxyethyl phosphorylcholine (MPC) and quaternary ammonium dimethylaminohexadecyl methacrylate (DMAHDM), and (2) investigate the effects on mechanical properties, protein-repellency and antibacterial properties...
September 21, 2018: Journal of Dentistry
Mathilde C Peters, Aubrey R Hopkins, Qingzhao Yu
OBJECTIVES: Micro-invasive resin-infiltration has shown to inhibit lesion progression of proximal non-cavitated carious lesions, suggesting an alternative to early operative treatment. This split-mouth, randomized placebo-controlled clinical trial evaluated the effects of proximal lesion infiltration supplementary to standard-of-care management in high caries risk (HCR)-patients. METHODS: Forty-two HCR-subjects with two similar interproximal posterior lesions received professional HCR-regimen including repeated F-varnish applications...
September 15, 2018: Journal of Dentistry
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