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Eda Haznedaroğlu, Şirin Güner, Canan Duman, Ali Menteş
The aim of this study was to compare the caries prevention effectiveness, retention rates and the level of fluoride of saliva of a glassionomer sealant (GIS) with that of a resin-based sealant (RS). Eighty GIS and 80RS were placed on the first permanent molars in 40 children aged 7-10 years. Children were re-examined at 6, 12, 24, 36 and 48 months after the procedure. Saliva samples were collected before the sealant was applied and again at each appointment, and fluoride levels were measured. After 48 months, occlusal caries were seen in 4 and 12 teeth in GIS and RS groups respectively...
June 1, 2016: Dental Materials Journal
Shuhei Hoshika, Jan De Munck, Hidehiko Sano, Sharan Kabir Sidhu, Bart Van Meerbeek
PURPOSE: To determine the bond stability and the change in interfacial ultrastructure of a conventional glassionomer cement bonded to dentin, with and without pretreatment using a polyalkenoic acid conditioner. MATERIALS AND METHODS: The occlusal dentin surfaces of 10 teeth were ground flat. Glass-ionomer cement was bonded to the surfaces either with or without polyalkenoic acid conditioning. The teeth were sectioned into 1-mm2 stick-shaped specimens. The 200 specimens obtained were randomly assigned to four groups with different periods of storage in water: 1 week, 1 month, 3 months, and 6 months...
April 2015: Journal of Adhesive Dentistry
Masahiro Iijima, Shuichi Ito, Susumu Nakagaki, Naohisa Kohda, Takeshi Muguruma, Takashi Saito, Itaru Mizoguchi
This study investigated the like-remineralizing ability of experimental toothpaste containing surface reaction-type pre-reacted glassionomer (S-PRG) filler on etched enamel. Human enamel blocks were etched with 35% phosphoric acid and immersed in 5-mL distilled water, fourfold diluted solution of NaF-containing toothpaste, or S-PRG filler-containing experimental toothpaste. Nanoindentation testing was carried out during immersion and the enamel surfaces were observed by scanning electron microscopy. Elemental analysis of the ions in each solution was performed using inductively coupled plasma atomic emission spectroscopy and fluoride electrode...
2014: Dental Materials Journal
Helmut Schweikl, Karl-Anton Hiller, Ulrich Carl, Rainer Schweiger, Andreas Eidt, Stefan Ruhl, Rainer Müller, Gottfried Schmalz
OBJECTIVES: The initial adhesion of microorganisms to clinically used dental biomaterials is influenced by physico-chemical parameters like hydrophobicity and pre-adsorption of salivary proteins. Here, polymethyl methacrylate (PMMA), polyethylene (PE), polytetrafluoroethylene (PTFE), silicone (Mucopren soft), silorane-based (Filtek Silorane) and methacrylate-based (Tetric EvoCeram) dental composites, a conventional glassionomer cement as well as cobalt-chromium-molybdenum (Co28Cr6Mo) and titanium (Ti6Al4V) were tested for adsorption of salivary proteins and adhesion of Streptococcus gordonii DL1...
October 2013: Dental Materials: Official Publication of the Academy of Dental Materials
Rohit Mohan Shetty, Sonia Bhat, Deepak Mehta, G Srivatsa, Y Bharath Shetty
AIM: The aim of this clinical study was to compare the postoperative sensitivity of abutment teeth restored with full coverage restorations retained with either conventional glassionomer cement (GIC) or resin cement. MATERIALS AND METHODS: Fifty patients received full-coverage restorations on vital abutment teeth. Of these, 25 were cemented with GIC (GC Luting and Lining cement) and the other 25 using an adhesive resin cement (Smartcem 2). A randomized single blind study was undertaken for acquiring and evaluating the data...
May 2012: Journal of Contemporary Dental Practice
Dan-Krister Rechenberg, Martina Schriber, Thomas Attin
PURPOSE: To evaluate the ability of the provisional filling material Cavit-W alone or in combination with different restorative materials to prevent bacterial leakage through simulated access cavities in a resin buildup material. MATERIALS AND METHODS: LuxaCore resin cylinders were subdivided into 4 experimental groups (n = 30), plus a positive (n = 5) and a negative (n = 30) control group. One bore hole was drilled through each cylinder, except those in the negative control group (G1)...
August 2012: Journal of Adhesive Dentistry
Rani S Prathibha
One hundred and sixty human permanent central incisors were enlarged to a 120 file size after crown removal procedure to simulate immature teeth. The root canals were filled with calcium hydroxide and stored for 15 days (phase I), 30 days (phase II), 90 days (phase III), and 180 days (Phase IV). At the end of these selected time periods, calcium hydroxide was cleaned off the root canals of forty teeth that were randomly selected and obturated with gutta-percha points in the apical 2 mm of the root canals with a sealer...
January 2011: Contemporary Clinical Dentistry
R N B van Duinen
Potentially toxic products like the existing composites and their derivatives may harm both patients and dentists and therefore prudence is recommended, particularly in dentistry for children. Biocompatible glassionomers are a meaningful alternative for composites but have low strength and wear resistance. Mechanical properties of self curing GIC's can be improved by using heat-curing technique making them command set materials. This article is showing the clinical possibilities using this technique. The forming of the so-called pseudo enamel (Fluor-Apatite) is a unique property...
July 2011: Journal of the Israel Dental Association
Pitsapaporn Wangpermtam, Michael G Botelho, John E Dyson
PURPOSE: To determine the adhesion of resin-modified glass-ionomer cement to bovine dentin under contaminated and decontaminated conditions. MATERIALS AND METHODS: Forty-five bovine mandibular incisors were used. The surfaces of bovine dentin specimens were subjected to Temp-bond, dental handpiece lubricant (contamination), Hibiscrub, chlorhexidine or pumice (decontamination), as well as contamination followed by decontamination. From these, 14 test groups were created to investigate the effects of these variables on the microtensile bond strength of a resin-modified glassionomer cement to dentin...
October 2011: Journal of Adhesive Dentistry
Mihaela Sălceanu, Maria Vataman, T Hamburda, Liana Aminov, C Topoliceanu, R Vataman
UNLABELLED: Our study aimed to assess the possibilities of healing in periapical lesions following endodontic therapy, using a standardised technique. MATERIAL AND METHODS: Study group included 34 patients with 15-45 age. 40 teeth with periapical granuloma and periapical difuse osteitis were endodontically treated. All teeth presented radicular obturations with adequate length and density consisting of gutaperca points and antiseptic sealer (Endoflas, Sanlor). Optimum coronal sealing was provided through prosthetic restorations or composite resins associated with glassionomer cements...
January 2009: Revista Medico-chirurgicală̆ a Societă̆ţ̜ii de Medici ş̧i Naturaliş̧ti Din Iaş̧i
Brigitte Zimmerli, Matthias Strub, Franziska Jeger, Oliver Stadler, Adrian Lussi
Various composite materials are available today for direct restorative techniques. The most well-known materials are the hybrid composites. This technology, based on methacrylates and different types of filler coupled with silanes, has been continuously improved. Disadvantages such as polymerisation shrinkage, bacterial adhesion and side effects due to monomer release still remain. The aim of material development is to eliminate or at least reduce these negative factors by adapting the individual components of the material...
2010: Revue Mensuelle Suisse D'odonto-stomatologie
D Markovic, B Petrovic, T Peric
BACKGROUND: Children with amelogenesis imperfecta (AI) experience many oral difficulties including sensitivity and aesthetics. The methods of treating AI children are limited and therefore a program of care was evaluated in order to assess the clinical efficacy of providing preventive and restorative treatments. CASE REPORTS: A non-randomised convenience sample of 12 patients with AI was evaluated. A comprehensive patient history was recorded, followed by a clinical and radiographic assessment of oral health...
August 2010: European Archives of Paediatric Dentistry: Official Journal of the European Academy of Paediatric Dentistry
T Târcă, Aida Bădescu, C Topoliceanu, St Lăcătuşu
UNLABELLED: In the new era of dentistry the coronal restoration materials must possess "bio-active" features represented by fluor ions release, chemical adhesion and antibacterial agents. AIM: Our study aims to determine the surface antibacterial properties of glassionomer cements and compomers. MATERIALS AND METHOD: The study group included 64 patients with high cariogenic risk with 80 teeth with acute and chronic dental caries affecting proximal and occlusal dental surfaces...
April 2010: Revista Medico-chirurgicală̆ a Societă̆ţ̜ii de Medici ş̧i Naturaliş̧ti Din Iaş̧i
Stefen Koubi, A Raskin, J Dejou, I About, H Tassery, J Camps, J P Proust
This study compared the marginal adaptation of Class II open-sandwich restorations with an RMGIC versus a dual-cure composite as dentin substitute. Class II cavities were prepared on 50 extracted human third molars. The teeth were randomly assigned to two groups of 25 teeth to compare one dual cure composite (Multicore Flow) with one resin-modified glass-ionomer cement (Fuji II LC) in open-sandwich restorations covered with a light cure composite. The teeth were thermomechanically cycled (2000 cycles, 5 degrees C to 55 degrees C; 100,000 cycles, 50 N/cm2)...
March 2010: Operative Dentistry
Stefen Koubi, A Raskin, J Dejou, I About, H Tassery, J Camps, J P Proust
The current study compared the marginal adaptation of Class II open-sandwich restorations with a RMGIC versus a dual-cure composite as dentin substitute. Class II cavities were prepared on 50 extracted human third molars. The teeth were randomly assigned to two groups of 25 teeth to compare one dual cure composite (MultiCore Flow) with one resin-modified glass-ionomer cement (Fuji II LC) in open-sandwich restorations recovered with a light cure composite. The teeth were thermomechanocycled (2000 cycles, 5 degrees C to 55 degrees C; 100,000 cycles, 50 N/cm2)...
March 2009: Operative Dentistry
A Hoszek, D Ericson
Fluoride release from glass-ionomers (GI) may be important for the prevention of secondary caries. The addition of chlorhexidine gluconate (CHX) to glass-ionomer cement (3%) adds an effect that enables it to be used as a varnish for the temporary coating of surfaces at risk for caries. This study investigated the fluoride release pattern and antibacterial effect of such a material. Glassionomer luting cement powder (Aqua-Cem) was mixed with water, 10% CHX or 10% CHX with 11% tartaric acid (TA), respectively, to test specimens (6 X 1...
November 2008: Operative Dentistry
Małgorzata Płuciennik, Danuta Sakowska, Zbigniew Krzemiński, Danuta Piatowska
The assessment of influence of silver-free, fluor releasing dental materials on dental plaque bacteria quantity. 17 patients were included into the study. 51 restorations were placed following manufacturers recommendations. Following materials were used: conventional glassionomer Ketac-Molar ESPE, resin modified glassionomer Fuji II LC GC and fluor containing composite Charisma Heraeus Kulzer Class V restorations were placed in following teeth of upper and lower jaw: canines, first bicuspids, second bicuspids...
2008: Medycyna Doświadczalna i Mikrobiologia
Dejan Lj Markovic, Bojan B Petrovic, Tamara O Peric
BACKGROUND: The relationship between fluoride content and fluoride release for glass-ionomer cements is not well understood. The aim of this laboratory study was: to determine the fluoride concentrations at the surfaces of glass-ionomer materials with respect to different storage media and different pH environments; to examine the recharge ability of the materials after NaF immersion; and to assess the morphological changes at the material surfaces using scanning electron microscope and energy dispersive spectroscopic techniques (SEM/EDS)...
2008: BMC Oral Health
Grazyna Marczuk-Kolada, Piotr Jakoniuk, Joanna Mystkowska, Elzbieta Łuczaj-Cepowicz, Danuta Waszkiel, Jan Ryszard Dabrowski, Katarzyna Leszczyńska
The aim of the study was to assess the fluoride ion release and antibacterial activities of the glassionomer cement Fuji IX and the compomer (composite modified polyacid) Dyract AP. Fluoride ion release was measured using direct potentiometry with an Orion fluoride ion selective electrode. The measurement was carried out after 1, 4, 7, 14, 30, and 60 days of storage in phosphate buffer at pH 6.8. The antibacterial activity of the materials was evaluated against the bacteria Streptococcus mutans ATCC 35668, Streptococcus salivarius ATCC 13419, Streptococcus sanguis ATCC 10556, and Lactobacillus casei subsp...
August 9, 2006: Postȩpy Higieny i Medycyny Doświadczalnej
R W Bryant, D B Mahler
BACKGROUND: Much of the concern about the setting contraction of tooth-coloured restorative materials has been focused on the composite resins. This study investigated setting contraction of a range of glassionomer materials and included, for comparison, products from other groups of restorative materials. METHODS: A deflecting disk method was used to determine the volumetric contraction of three conventional (non-light cured) glass-ionomer cements (GICs), two restorative, one "lining" consistency and one adhesive/lining consistency resin-modified glass-ionomers (RMGIs), two resin adhesives, three restorative composite resins and two compomers...
June 2007: Australian Dental Journal
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