List of Articles by MeSH

DENTURE REPAIR

1. Piotrowski P, Krysinski Z, Rztowski S. Evaluation of Direct and Indirect Methods of Repairing Fractured. Acta Stomatol Croat. 2002;36(3):350.
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   Title in English:	Evaluation of Direct and Indirect Methods of Repairing Fractured
   Title in Croatian:	nema
   Type of Article:	congress abstract
   MeSH:	DENTURE REPAIR
   Abstract:	INTRODUCTION: The most common technology used in producing a fixed partial denture is firing porcelain to metal. The fracture of veneering material rarely occurs, although it is one of the most striking problems in daily practise.PURPOSE: The purpose of this study was to evaluate the shear bond strength of composite to porcelain and metal by using two intraoral repair methods: direct and indirect.MATERIAL AND METHODS: The direct method was performed by using Ceramic Repair System (Ivoclar, Lichtenstein) with and without sandblasting. The indirect method involved Co-Jet system (ESPE,Germany) and Rely X ARC (3M,USA) as luting agents. 180 specimens fabricated with feldspathic porcelain and Ni-Cr alloywere divided into 3 groups: CR/0 (direct method of repair without sandblasting), CR/S (direct method of repair with sandblasting) and CJ (indirect method based on Co-Jet system). Each of them was divided into 3 subgroups of 20: porcelain (P), porcelain and metal (P/M) and metal (M). The 10 specimens were then subjected to a shear test in a mechanical testing machine at a crosshead speed of0.5 mm/min. Mode of failure was recorded. Means and standart deviations of loads were calculated. RESULTS: Tested groups exhibited the following values in megapascals: CR/0-P = 20.36 ± 3.05; CR/0-P/M = 19.45 ± 3.49; CR/0-M = 10.86 ± 4.1; CR/S-P = 18.21 ± 2.62; CR/S-P/M = 19.34 ± 1.76; CR/S-M = 9,54 ± 2.48; CJ-P = 19.85 ± 1.94; CJ-P/M = 19,78 ± 3.60; CJ-M = 13.56 ± 3.82. The mean fractured loads were significantly lower for metal subgroups than for porcelain and porcelain/ metal subgroups.CONCLUSION: Higher shear bond strength is expected when porcelain was fractured without extensive metal exposure.

2. Benke B, Szabo G. The Problem of Solving Fracture of the Denture Base in Preedentulous States. Acta Stomatol Croat. 2002;36(3):322.
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   Title in English:	The Problem of Solving Fracture of the Denture Base in Preedentulous States
   Title in Croatian:	nema
   Type of Article:	congress abstract
   MeSH:	DENTURE REPAIR
   Abstract:	The mechanical fatigue resistance of the denture base seems to be a neglected part of treatment planning. Extreme overload can occur, which is only evaluated in the case of fracture. In full or partial edentia the dental base can be exposed to an extreme stress concentration which may be coupled with the incidental source of failure during processing of the denture. The aim of this lecture is to report cases, where we were able to overcome dental base fracture, which had not been foreseen earlier. In the first case a history of several fractures of an upper complete denture is presented. Metal net, framework and incorporation of glass fibres and reline werestages of the instructive problem solving process. In the second case a man wearing an overdenture with ball attachments under implant fixtures is presented. After multiple fractures of the dental base we used glass fibre reinforcement for repair. After this procedure there was an eventless period, which proves the mechanical resistanceof the denture base. In the third case presented both the denture base and the acrylic tooth were damaged. The multiple fracturecould also be treated with glass fibre reinforcement, which was successful. From these cases we concluded:1. Careful case history and treatment plan could have helped to overcome the subsequent problems.2. The clinical implication is that the glass fibre reinforcement can provide effective strength for the denture base. We could not neglect evaluation of the mucosa and bone support. In the following period we reinforced new dentures preventively with fibres in 15 cases. At the same time we also continued the repair the broken dentures of 10patients. The outcome exceeded our greatest expectations: no fracture was seen. However, further study is needed to extend the observation period.

3. Özyegin LS, Sinmazisik G. Investigation of the Fracture Surface of E Glass Fiber Reinforced PMMA Denture Base Resins. Acta Stomatol Croat. 2002;36(3):322-3.
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   Title in English:	Investigation of the Fracture Surface of E Glass Fiber Reinforced PMMA Denture Base Resins
   Title in Croatian:	nema
   Type of Article:	congress abstract
   MeSH:	DENTURE REPAIR DENTURE BASES POLYMETHYL METHACRYLATE
   Abstract:	The interface between fibers and the acrylic resin matrix is considered to be an important factor in the reinforcement, and the microscopic surface structure may play a key role in the effectiveness of this reinforcement. Adequate adhesion of the fibers to the polymer matrix is one of the most important factors for strength. The optic microscope, although of limited resolution, is still a popular choice. The scanning electron microscope (SEM) provides measurements in 2 dimensions. The aim of the study was to examine the interfacial region of PMMA reinforced with chopped glass fiberscoated with two different silans using the scanning electron microscope. E Glass fibers coupled with Silan 1 (silan + epoxy resin) and Silan 2 (silan + polyester resin) were used to reinforce denture base polymethyl metacrylate resin. Specimens were produced by two different methods in the first group, and the fibers were soaked with a mixture of polymer powder and monomer liquid. In the second group the fibers were soaked in the polymer liquid for 15 minutes and then blended with PMA polymers. All the samples were heat cured. Transverse strength of specimens was evaluated by a 3 point bending test. Fracture surfaces of the test specimens were examined with SEM to evaluate the degree of impregnation of fibers with the polymer matrix. SEM examination revealed well impregnatedglass fibers with the polymer matrix. No difference was found between the test groups.

4. Polyzois G. Denture Repairs: Surveys, Methods and Trends. Acta Stomatol Croat. 2002;36(3):313-4.
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   Title in English:	Denture Repairs: Surveys, Methods and Trends
   Title in Croatian:	nema
   Type of Article:	congress abstract
   MeSH:	DENTURE REPAIR
   Abstract:	Denture repairing is a very common practice encountered in everyday clinical removable prosthodontics. It may be consisted of fractured dentures, debonded or broken denture teeth etc. These may be due to intraoral fatigue failure of acrylic resin or the accidental dropping of dentures outside the mouth. The purpose of this presentation is under the lights of the best available evidence to identify first from surveys the most common and more imporantdenture repairing procedures. It well known that the purpose of repairing e.g. a fractured denture is to restore its strength at least to the original one. It seems in practice that it is not the fact. The most popular methods of repairing dentures will be analyzed regarding their strength and the attempts to enhance it through reiforcing materials like metal wires or fibers will be presented. Finally suggestions and thoughts for further investigations considering herecent available evidence will be discussed.

5. Guljaš K, Pandurić J, Kraljević S, Knezović D, Čelić R, Badel T. Analysis of the incidence of removable denture fractures in an adult population. Acta Stomatol Croat. 1998;32(1):59-69.
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   Title in English:	Analysis of the incidence of removable denture fractures in an adult population
   Title in Croatian:	Raščlamba pojavnosti lomova mobilnih proteza u odrasloj populaciji
   Type of Article:	original scientific paper
   MeSH:	DENTURES DENTURE REPAIR PROSTHESIS FAILURE DENTURE BASES
   Abstract:	(not available)