Provisional crown and fixed partial denture materials: Mechanical properties and degree of conversion

Balkenhol, Markus; Ferger, P; Mautner, Meike Christina; Wöstmann, Bernd

doi:10.1016/j.dental.2007.06.024

Cited by 58 publications

(60 citation statements)

References 25 publications

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“…It might be discussed that an additional test group with 7 days storage at 37 8C might have been beneficial for parity. However, we decided not to include this test group in the current study for the following reason: looking at the results of a previous study 15 it was obvious that the greatest change of mechanical properties takes place in the first 2-3 days. Consequently, implementing the additional test group would not lead to important additional information.…”

Section: Discussionmentioning

confidence: 97%

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Mechanical properties of provisional crown and bridge materials: Chemical-curing versus dual-curing systems

Balkenhol

Mautner

Ferger

et al. 2008

Journal of Dentistry

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Section: Discussionmentioning

confidence: 97%

“…10 A recent study has shown that the mechanical strength of provisional crown and bridge materials is very low directly after fabrication. 15 However, no information is available regarding the performance of methacrylate resins and dualcuring composite based materials in this respect.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of provisional crown and bridge materials: Chemical-curing versus dual-curing systems

Balkenhol

Mautner

Ferger

et al. 2008

Journal of Dentistry

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“…Unlike PMMA, bis-acryl composite resins contain divinyl methacrylate monomers and filler particle loading (3). As result, polymerization shrinkage and exothermic release are potentially reduced, and color stability is improved compared with PMMA (4)(5)(6). In addition, bis-acryl composite resins are commercially available for use with automix syringes, increasing costs but with easy handling and reducing air entrapment.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Bis-Acryl Composite Resins for Provisional Restorations

et al. 2017

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This study investigated the in vitro performance of the commercial bis-acryl composite resins Systemp C&B II (SYS, Ivoclar Vivadent), Protemp 4 (PT4, 3M ESPE), Structur 2C (ST2, Voco) and ProviPlast (PVP, Biodinamica). Characterization involved optical (color stability, translucency parameter, fluorescence), surface (roughness, morphology and elemental composition), physical-chemical (viscosity, polymerization kinetics) and mechanical analyses (Poisson ratio, biaxial flexural strength, flexural modulus). Most tests were carried out after 24 h, but optical and mechanical analyses were carried out after storage in water at 37 °C for 1, 15, and 30 days. Data were statistically analyzed (α=0.05). Most results were material dependent. SYS and PT4 showed stability in color and translucency over time. All materials had similar or higher fluorescence than human enamel. SC2 and PVP showed rougher surfaces than the other bis-acryl composites. Smaller filler particles were observed on the surface of PT4 and PVP compared with the coarser particles from ST2 and SYS. Viscosity readings indicated a thixotropic behavior for all tested materials. SYS had the lowest and PT4 the highest degree of C=C conversion after 10 min. In the polymerization kinetics, PT4 had the highest maximum polymerization rate and reached earlier the transition between polymerization autoacceleration and autodeceleration. PT4 and SYS had significantly higher flexural strength and modulus than ST2 and PVP for most storage times. Results for Poisson ratio varied between materials. Longer storage periods were generally associated with higher frequency of catastrophic failures in the flexural tests. In conclusion, the performance of bis-acryl composite resins varied largely among materials.

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“…In their studies, they kept samples in artificial saliva for 14 days and after that time they compared microhardness with primary samples measured after 24 hours since preparation. On the other hand, Balkenhol et al while comparing the flexural strength, depending on the time that passed from polymerization, proved that for the first few hours materials showed lower flexural strength [3]. The effect can be explained by the fact that materials prepared on the basis of acrylic products need more time to undergo full polymerization.…”

mentioning

confidence: 92%

“…These factors can considerably influence mechanical and esthetic properties of prepared crowns and bridges [3]. A human should drink approximately 2-3 liters of liquids.…”

Section: Introductionmentioning

confidence: 99%

An experimental study of exploitation of materials used for prosthetic temporary restorations

et al. 2017

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Abstract. Temporary restorations more often play their role for a definitely longer period of time, than the time necessary for implementation of final prosthetic work. Therefore, they are subjected to adverse effects of chemical, physical and thermal factors in a patient's oral cavity. Since loss of temporary prosthetic work can have negative consequences for an entire treatment process, it is important to identify a potential risk of damaging temporary restorations by factors derived from the diet of patients. The aim of this study was to evaluate the influence of components of the beverages, such as coffee and tea, consumed daily by the patients, on the mechanical properties of materials used in temporary restorations. The experimental design applied, as well as gained results, were justified by appropriate, chosen statistical methods. The conducted research demonstrated the change of mechanical properties of studied materials for their flexural strength, as well as microhardness. The tendency of changes in both result variables, compared with the samples kept in neutral environment -distilled water, indicates the decrease in mechanical strength and microhardness of materials conditioned in coffee and tea. It can be claimed that the components of beverages present in an everyday diet of patients have a considerably adverse effect on the quality of materials used for provisional crowns and bridges. BackgroundNew possibilities of prosthetic treatment sometimes require fixed temporary restorations to be used for longer than the time needed to prepare a final restoration.During treatment, patients expect temporary restorations to be esthetic and comfortable thus, the requirements for temporary restorations are almost identical with those set up for final restorations [1]. Additionally, apart from being esthetic, temporary restorations must meet several conditions -protection of a living dental pulp against chemical, thermal and mechanical factors, assurance of stable occlusion, continuity of functions of stomatognathic system and support for soft tissues [2].Currently, on the market, there are many materials for temporary prosthetic restorations. These are mainly materials based on acrylic mass or composite materials, and they can meet requirements for temporary restorations to a different extent.A prosthesis in the oral cavity is constantly prone to mechanical, chemical and thermal factors deriving from the diet of patients. These factors can considerably influence mechanical and esthetic properties of prepared crowns and bridges [3]. A human should drink approximately 2-3 liters of liquids. The type of liquid depends on the age and individual patient's preferences.The adults, who constitute the majority of patients treated prosthetically, most often drink coffee and tea. These beverages can have a crucial impact on mechanical and esthetic properties of temporary and final restorations.The materials for temporary restorations can change their mechanical and esthetic properties. Diaz-Arnold et al. found that the ...

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Provisional crown and fixed partial denture materials: Mechanical properties and degree of conversion

Cited by 58 publications

References 25 publications

Mechanical properties of provisional crown and bridge materials: Chemical-curing versus dual-curing systems

Mechanical properties of provisional crown and bridge materials: Chemical-curing versus dual-curing systems

Characterization of Bis-Acryl Composite Resins for Provisional Restorations

An experimental study of exploitation of materials used for prosthetic temporary restorations

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