scholarly journals Conservative Substitution of Fractured Ceramic Onlays Using Self-Adhesive Cement: Case Report

2019 ◽  
Vol 21 (5) ◽  
pp. 464-469
Author(s):  
Mariana Dias Flor-Ribeiro ◽  
Josué Júnior Araújo Pierote ◽  
Giselle Maria Marchi ◽  
Luis Alexandre Maffei Sartini Paulillo
Keyword(s):  
Case Report ◽  
Clinical Success ◽  
Treatment Protocol ◽  
Resin Cement ◽  
Correct Identification ◽  
Resin Cements ◽  
Adhesive Resin ◽  
Posterior Teeth ◽  
Dental Bonding ◽  
Tooth Structure

Abstract The advances in bonding of ceramics and self-adhesive resin cements to tooth structure make this treatment a feasible alternative to restore posterior teeth. This case report described the removal of two fractured onlays and the fabrication of new lithium disilicate onlays cemented with self-adhesive resin cement. The rationale for various choices in this treatment protocol is detailed with reference to the pertinent literature. It is concluded that the clinical success of the technique depends on the correct identification of the case for which this treatment is appropriate and on the successful execution of the clinical steps involved. Keywords: Dental Cements. Resin Cements. Dental Bonding.   ResumoOs avanços na adesão de cerâmicas e cimentos resinosos autoadesivos à estrutura dentária tornam este tratamento uma alternativa viável para restaurar os dentes posteriores. Ester relato de caso descreveu a remoção de duas onlays fraturadas e confecção de novas onlays de dissilicato de lítio cimentadas com cimento resinoso auto-adesivo. A justificativa para várias escolhas neste protocolo de tratamento é detalhada com referência à literatura pertinente. O sucesso clínico da técnica depende da correta identificação do caso para o qual este tratamento é adequado e da execução bem-sucedida das etapas clínicas envolvidas. Palavras-chave: Cimentos Dentários. Cimentos de Resina. Colagem Dentária.

Porcelain Veneers as an Alternative for Esthetic Treatment: Clinical Report

2013 ◽  
Vol 38 (5) ◽  
pp. 459-466 ◽  
Author(s):  
BT Rotoli ◽  
DANL Lima ◽  
NP Pini ◽  
FHB Aguiar ◽  
GDS Pereira ◽  
...  
Keyword(s):  
Case Report ◽  
Clinical Success ◽  
Treatment Protocol ◽  
Correct Identification ◽  
Clinical Report ◽  
Pertinent Literature ◽  
Tooth Structure ◽  
Successful Execution ◽  
Feasible Alternative ◽  
Laminate Veneers

SUMMARY This case report describes the restoration of the anterior dentition with porcelain laminate veneers. The advances in bonding of porcelain to tooth structure make this treatment a feasible alternative to restore teeth with alteration in shape and position in cases in which the esthetic demand is high. The rationale for various choices in this treatment protocol is detailed with reference to the pertinent literature. Thus, the clinical success of the technique depends on the correct identification of a case for which this treatment is appropriate and the successful execution of the clinical steps involved.

scholarly journals Biological Restorations as an Alternative to Reconstructing Posterior Teeth: A Case Report

2015 ◽  
Vol 40 (2) ◽  
pp. 123-128 ◽  
Author(s):  
NLG Albuquerque ◽  
JS Mendonça ◽  
CSR Fonteles ◽  
JC Pereira ◽  
SL Santiago
Keyword(s):  
Case Report ◽  
Female Patient ◽  
Alternative Treatment ◽  
Resin Cement ◽  
Human Teeth ◽  
Posterior Teeth ◽  
Technical Aspects ◽  
Tooth Structure ◽  
Permanent Molars

SUMMARY This article reports on a three-year follow-up of two biological restorations performed on a 15-year-old female patient. After clinical evaluation, tooth fragments from extracted permanent molars were obtained from a Human Teeth Bank and were autoclaved, adjusted to the prepared cavity, and bonded to the remaining tooth structure with dual resin cement. The technical aspects are described and the benefits and disadvantages of biological restorations as an alternative treatment for rehabilitation of severely destroyed permanent molars are discussed.

Development of a Cavity Disinfectant Containing Antibacterial Monomer MDPB

2016 ◽  
Vol 95 (13) ◽  
pp. 1487-1493 ◽  
Author(s):  
N. Hirose ◽  
R. Kitagawa ◽  
H. Kitagawa ◽  
H. Maezono ◽  
A. Mine ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Bond Strength ◽  
Bacterial Species ◽  
Oral Bacteria ◽  
Resin Cement ◽  
Resin Cements ◽  
Adhesive Resin ◽  
Significant Difference ◽  
Adhesive Resin Cement

An experimental cavity disinfectant (ACC) that is intended to be used for various direct and indirect restorations was prepared by adding an antibacterial monomer 12-methacryloyloxydodecylpyridinum bromide (MDPB) at 5% into 80% ethanol. The antibacterial effectiveness of ACC and its influences on the bonding abilities of resin cements were investigated. To examine the antibacterial activity of unpolymerized MDPB, the minimum inhibitory and bactericidal concentrations (MIC and MBC) were determined for Streptococcus mutans, Lactobacillus casei, Actinomyces naeslundii, Parvimonas micra, Enterococcus faecalis, Fusobacterium nucleatum, and Porphyromonas gingivalis. Antibacterial activities of ACC and the commercial cavity disinfectant containing 2% chlorhexidine and ethanol (CPS) were evaluated by agar disk diffusion tests through 7 bacterial species and by MIC and MBC measurement for S. mutans. The effects of ACC and CPS to kill bacteria in dentinal tubules were compared with an S. mutans–infected dentin model. Shear bond strength tests were used to examine the influences of ACC on the dentin-bonding abilities of a self-adhesive resin cement and a dual-cure resin cement used with a primer. Unpolymerized MDPB showed strong antibacterial activity against 7 oral bacteria. ACC produced inhibition zones against all bacterial species similar to CPS. For ACC and CPS, the MIC value for S. mutans was identical, and the MBC was similar with only a 1-step dilution difference (1:2). Treatment of infected dentin with ACC resulted in significantly greater bactericidal effects than CPS ( P < 0.05, analysis of variance and Tukey’s honest significant difference test). ACC showed no negative influences on the bonding abilities to dentin for both resin cements, while CPS reduced the bond strength of the self-adhesive resin cement ( P < 0.05). This study clarified that the experimental cavity disinfectant containing 5% MDPB is more effective in vitro than the commercially available chlorhexidine solution to eradicate bacteria in dentin, without causing any adverse influences on the bonding abilities of resinous luting cements.

scholarly journals The Effect of Self-adhesive and Self-etching Resin Cements on the Bond Strength of Nonmetallic Posts in Different Root Thirds

2015 ◽  
Vol 16 (2) ◽  
pp. 147-153 ◽  
Author(s):  
Mateus Rodrigues Tonetto ◽  
Rudys Rodolfo de Jesus Tavarez ◽  
Omar El-Mowafy ◽  
Matheus Coelho Bandeca ◽  
Thiago Soares Porto ◽  
...  
Keyword(s):  
Bond Strength ◽  
Resin Cement ◽  
Resin Cements ◽  
Human Teeth ◽  
Adhesive Resin ◽  
Microtensile Testing ◽  
Special Machine ◽  
Adhesive Resin Cement ◽  
The Difference ◽  
Post Space

ABSTRACT Purpose The purpose of this study was to evaluate the effect of self-adhesive and self-etching resin cements on the bond strength of nonmetallic posts in different root regions. Materials and methods Sixty single-rooted human teeth were decoronated, endodontically treated, post-space prepared, and divided into six groups. Glass-fiber (GF) posts (Exacto, Angelus) and fiber-reinforced composite (FRC) posts (EverStick, StickTeck) were cemented with self-adhesive resin cement (Breeze) (SA) (Pentral Clinical) and self-etching resin cement (Panavia-F) (SE) (Kuraray). Six 1-mm-thick rods were obtained from the cervical (C), middle (M), and apical (A) regions of the roots. The specimens were then subjected to microtensile testing in a special machine (BISCO; Schaumburg, IL, USA) at a crosshead speed of 0.5 mm/min. Microtensile bond strength data were analyzed with two-way ANOVA and Tukey's tests. Results Means (and SD) of the MPa were: GF/SA/C: 14.32 (2.84), GF/SA/M: 10.69 (2.72), GF/SA/A: 6.77 (2.17), GF/SE/C: 11.56 (4.13), GF/SE/M: 6.49 (2.54), GF/SE/A: 3.60 (1.29), FRC/SA/C: 16.89 (2.66), FRC/SA/M: 13.18 (2.19), FRC/SA/A: 8.45 (1.77), FRC/SE/C: 13.69 (3.26), FRC/SE/M: 9.58 (2.23), FRC/SE/A: 5.62 (2.12). The difference among the regions was statistically significant for all groups (p < 0.05). The selfadhesive resin cement showed better results than the selfetching resin cement when compared to each post (p < 0.05). No statistically significant differences in bond strengths of the resin cements when comparable to each post (p > 0.05). Conclusion The bond strength values were significantly affected by the resin cement and the highest values were found for self-adhesive resin cement. How to cite this article da Silva MB, de Jesus Tavarez RR, de Assis FS, Tonetto MR, Porto TS, Bhandi SH, El-Mowafy O, de Toledo Porto Neto S, Bandeca MC. The Effect of Self-adhesive and Self-etching Resin Cements on the Bond Strength of Nonmetallic Posts in Different Root Thirds. J Contemp Dent Pract 2015;16(2):147-153.

Is Conventional Resin Cement Adhesive Performance to Dentin Better Than Self-adhesive? A Systematic Review and Meta-Analysis of Laboratory Studies

2020 ◽  
Vol 45 (5) ◽  
pp. 484-495
Author(s):  
LL Miotti ◽  
AC Follak ◽  
AF Montagner ◽  
RT Pozzobon ◽  
BL da Silveira ◽  
...  
Keyword(s):  
Systematic Review ◽  
Bond Strength ◽  
Global Analysis ◽  
Resin Cement ◽  
Long Term Results ◽  
Laboratory Studies ◽  
Resin Cements ◽  
Adhesive Resin ◽  
Adhesive Performance

Clinical Relevance Conventional multistep resin cements presented higher adhesive performance to dentin than simplified self-adhesive cements, which is an important criterion for indirect restoration prognosis. SUMMARY This study aimed to conduct a systematic review of the literature on laboratory studies assessing bonding performance to dentin of conventional and self-adhesive resin cements, in cementing indirect restorations. This review was reported according to the PRISMA Statement. Of a total of 518 studies, 36 were screened full text and reviewed according to exclusion criteria. Nineteen papers were included in the systematic review and meta-analyses, according to the following inclusion criteria: studies that evaluated the bond strength to dentin of indirect restorations cemented with dual conventional or self-adhesive resin cements and those that presented bond strength data in MPa as an outcome. Statistical analyses were conducted using Rev-Man 5.1. Comparisons were performed with random effects models at 5% significance level. A global analysis comparing conventional and self-adhesive cements and three subgroup analyses comparing immediate and long-term results were performed. Global analysis showed a difference between groups, with conventional resin cements presenting higher bond strength results than self-adhesive resin cements, in immediate and long-term time periods (both p=0.03). Immediate and longterm bond strength results were different for self-adhesive cements, favoring immediate bond strength (p=0.03), but immediate and long-term bond strength results for conventional resin cements were not different (p=0.06). Medium or high risk of bias was found in all studies. Conventional multistep resin cements showed superior overall adhesive performance compared with simplified self-adhesive resin cements when used to cement indirect restorations to dentin.

scholarly journals Bond Durability of Different Resin Cements to Caries-Affected Dentin Under Simulated Intrapulpal Pressure

2015 ◽  
Vol 40 (3) ◽  
pp. 293-303 ◽  
Author(s):  
MF Mohamed ◽  
HA El Deeb ◽  
IE Gomaa ◽  
EH Mobarak
Keyword(s):  
Failure Modes ◽  
Storage Conditions ◽  
Resin Cement ◽  
Dihydrogen Phosphate ◽  
Resin Cements ◽  
Adhesive Resin ◽  
Machine Failure ◽  
Etch And Rinse ◽  
Adhesive Resin Cement ◽  
Self Etch

SUMMARY Objective: To evaluate the durability of the bond of different resin cement systems to normal dentin (ND) and caries-affected dentin (CAD) with and without simulated intrapulpal pressure (IPP). Methods and Materials Molars with midcoronal caries were used. Occlusal enamel was cut to expose both dentin substrates (ND and CAD). Dentin substrates were differentiated using visual, tactile, caries-detecting dye, and dye-permeability methods. Prepared crown segments were equally divided according to the tested resin cement systems: etch-and-rinse resin cement, self-etch resin cement containing methacryloyloxydecyl dihydrogen phosphate (MDP), and self-adhesive resin cement. In addition to the dentin substrates and the resin cement types, the effect of application/storage conditions (with or without simulated IPP and with or without thermocycling) were tested. A microtensile bond strength test was done using a universal testing machine. Failure modes were determined using a scanning electron microscope. Results Etch-and-rinse resin cement strength values were significantly affected by the difference in the dentin substrates as well as the different application/storage conditions. Self-etch adhesive containing MDP bonded equally to ND and CAD and remained stable under all tested conditions. Self-adhesive resin cement revealed a similar bond to ND and CAD; however, its values were the lowest, especially when IPP and thermocycling were combined. Mixed failure was the predominant failure mode. Conclusions Etch-and-rinse resin cement was sensitive to dentin substrate and application/storage conditions. Resin cement with self-etch adhesive containing MDP revealed more reliable bonding to ND/CAD even when IPP and thermocycling were combined. The bonding of the self-adhesive resin cement could not compete with other resin cements.

Simulated Wear of Self-Adhesive Resin Cements

2016 ◽  
Vol 41 (3) ◽  
pp. 327-338 ◽  
Author(s):  
T Takamizawa ◽  
WW Barkmeier ◽  
MA Latta ◽  
TP Berry ◽  
A Tsujimoto ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Resin Cement ◽  
Gap Model ◽  
Marginal Gap ◽  
Wear Model ◽  
Resin Cements ◽  
Adhesive Resin ◽  
Luting Agents ◽  
Significant Difference ◽  
Worn Surfaces

SUMMARY One of the primary areas of concern with luting agents is marginal gap erosion and attrition. The purpose of this laboratory study was to evaluate bulk and marginal slit (gap) generalized wear of self-adhesive resin cements. Three self-adhesive resin cements were used in this study: G-CEM LinkAce (LA), Maxcem Elite (ME), and RelyX Unicem2 Automix (RU). A custom stainless-steel fixture with a cavity 4.5 mm in diameter and 4 mm deep was used for simulated generalized (bulk) wear. For simulated marginal gap wear, a two-piece stainless-steel custom fixture was designed with a slit (gap) 300 μm wide and 3 mm in length. For both wear models, 20 specimens each for each of the three adhesive cements were made for both light-cure and chemical-cure techniques. The cured cements were polished with a series of carbide papers to a 4000-grit surface and subjected to 100,000 cycles using the slit (gap) wear model and 400,000 cycles for generalized (bulk) wear in a Leinfelder-Suzuki (Alabama machine) wear simulator (maximum load of 78.5 N). Flat-ended stainless-steel antagonists were used in a water slurry of poly(methylmethacrylate) beads for simulation of generalized contact-free area wear with both wear models. Before and after the wear challenges, the specimens were profiled with a Proscan 2100 noncontact profilometer, and wear (volume loss [VL] and mean facet depth [FD]) was determined using AnSur 3D software. Two-way analysis of variance (ANOVA) and Tukey post hoc tests were used for data analysis for the two wear models. Scanning electron microscopy (SEM) was used to examine polished surfaces of the resin cements and the worn surfaces after the wear challenges. The two-way ANOVA of VL using the generalized (bulk) wear model showed a significant effect among the three resin cement materials for the factor of resin cement (p&lt;0.001) and the interaction of the cement and cure method (p&lt;0.001), but not for the cure method (p=0.465). The two-way ANOVA for FD also found a significant difference for the factor of resin cement (p&lt;0.001) and the interaction of the resin cement and cure method (p&lt;0.001), but not for the cure method (p=0.277). The simulated generalized (bulk) wear for the light-cure groups was as follows: VL (mm3): RU 0.631 (0.094), LA 0.692 (0.112), and ME 1.046 (0.141) and FD (μm): RU 43.6 (6.5), LA 47.0 (7.7), and ME 72.5 (9.9). The simulated generalized (bulk) wear for the chemical-cure groups was as follows: VL (mm3): LA 0.741 (0.105), RU 1.231 (0.234), and ME 1.305 (0.143) and FD (μm): LA 50.7 (7.2), RU 84.5 (16.1), and ME 91.7 (10.2). Simulated wear using the slit (gap) model for the light-cure groups was as follows: VL (mm3): RU 0.030 (0.006), LA 0.031 (0.006), and ME 0.041 (0.009) and FD (μm): RU 49.6 (5.7), LA 57.2 (8.4), and ME 70.9 (10.7). The wear values for the chemical-cure slit (gap) groups were as follows: VL (mm3): LA 0.031 (0.004), ME 0.038 (0.007), and RU 0.045 (0.009) and FD (μm): LA 53.9 (6.7), ME 63.5 (9.1), and RU 74.2 (12.9). Pearson correlation tests revealed a strong relationship between the two wear models for the light-cure groups and a good relationship for the chemical-cure groups. The observations using SEM showed differences in filler particle shape and size among the cements and the resultant effect of the wear challenges. The worn surfaces of each cement were essentially the same for both light-cure and chemical-cure methods. The bulk wear model and new slit (gap) model for evaluation of simulated generalized wear of luting agents demonstrated significant differences (p&lt;0.05) in relative wear among three self-adhesive resin cements and between visible light- and chemical-cure techniques.

scholarly journals Combating a Case of COVID Pneumonia with ARDS – a Physiotherapist’s Standpoint

2021 ◽  
pp. 412-417
Author(s):  
Chaithanya Ratheesh ◽  
Aishwarya Nair
Keyword(s):  
Case Report ◽  
Ventilatory Support ◽  
Treatment Protocol ◽  
Respiratory Illness ◽  
Supplemental Oxygen ◽  
Multiple Organ ◽  
Vital Role ◽  
Correct Identification ◽  
Physiotherapy Treatment ◽  
Organ Systems

Introduction: Coronavirus disease (COVID-19) is an infectious disease caused by the SARS-CoV-2 virus, affecting multiple organ systems. The disease usually presents as mild to moderate respiratory illness but in many cases has progressed to development of pneumonia and ARDS ultimately requiring ventilatory support and prolonged ICU stay. Prolonged immobilization itself is a harbinger of various complications drastically altering a patient’s functional status. Physiotherapy plays a vital role in the management of COVID-19 symptoms as well as in the prevention of complications.  Case Study: This case report describes the progress of a 44-year old female patient diagnosed with COVID-19 presenting with subsequent pneumonia and ARDS. The patient was started with medical management and supplemental oxygen therapy. In combination to the above-mentioned protocols, physiotherapy treatment was also initiated. After 2 weeks of rehabilitation and drug therapy, the patient displayed improved respiratory function at room air and was able to independently ambulate with minimal breathing difficulty. Discussion: This case report aims to highlight the importance of early intervention of physiotherapy in COVID-19 patients. The scope of physiotherapy treatment in patients with COVID-19 pneumonia is vast. The treatment protocol adapted for this patient are in tune with the various research articles analysed to ensure evidence-based care. This will enable the healthcare professionals to ensure timely referral and early initiation of Physiotherapy treatment. Conclusion: As per the findings and results of this case report, it is evident that the patient benefited from the timely advent of physiotherapy intervention. The key factor was the correct identification of the problematic areas and accurate prioritization based on the clinical presentation and investigation findings

scholarly journals Influence of Relining Post on the Bond Strength of Resin Cements

2015 ◽  
Vol 16 (7) ◽  
pp. 559-564 ◽  
Author(s):  
Matheus Coelho Bandéca ◽  
Adriano Augusto Melo de Mendonça ◽  
Etevaldo Matos Maia Filho ◽  
Fausto da Silva Bramante ◽  
Darlon Martins Lima ◽  
...  
Keyword(s):  
Bond Strength ◽  
Resin Cement ◽  
The Self ◽  
Fiber Post ◽  
Resin Cements ◽  
Adhesive Resin ◽  
Fiber Posts ◽  
Significant Difference ◽  
Adhesive Cement ◽  
Push Out

ABSTRACT This study evaluated the influence of relining fiber posts on the bond strength (BS) of resin cements in the root canal. Forty bovine teeth were divided in four groups (n = 10)G1 (ARC)—fiber post cemented with resin cement RelyX ARC; G2 (ARC+Z350)—relined fiber post cemented with RelyX ARC; G3 (U200)—fiber post cemented with self-adhesive cement RelyX U200; G4 (U200+Z350)—relined fiber post cemented with RelyX U200. The roots were sectioned in six 1.2-mm slices and the push-out test was performed. Data were analyzed by three-way analysis of variance (ANOVA), and Tukey's test (α = 0.05). For the conventional resin cement, there was no significant difference between groups G1-ARC (15.5 ± 3.8) and G2-ARC+Z350 (16.1 ± 4.5). For the self-adhesive cement, the results revealed higher BS values for relined posts G4-U200 + Z350 (19.9 ± 7.9) as compared to non-relined posts G3-U200 (14.4 ± 4.5). For both cements, in groups of relined posts, the apical and the cervical thirds presented similar BS. Relining enhances the performance of the self-adhesive resin cement, and the interaction between relining and root third influences the BS to the conventional resin cement. How to cite this article Conde DM, Rodrigues VP, de Fátima Carvalho Souza S, Bauer JRO, da Silva Bramante F, Lima SNL, Filho EMM, Bandeca MC, de Mendonça AAM, Lima DM. Influence of Relining Post on the Bond Strength of Resin Cements. J Contemp Dent Pract 2015;16(7):559-564.

Evaluation of the Microshear Bond Strength of MDP-containing and Non–MDP-containing Self-adhesive Resin Cement on Zirconia Restoration

2019 ◽  
Vol 44 (4) ◽  
pp. 379-385 ◽  
Author(s):  
EJ Go ◽  
Y Shin ◽  
JW Park
Keyword(s):  
Bond Strength ◽  
Resin Cement ◽  
Dihydrogen Phosphate ◽  
Resin Cements ◽  
Adhesive Resin ◽  
Exact Test ◽  
Tukey Test ◽  
Significant Difference ◽  
Post Hoc ◽  
Microshear Bond Strength

SUMMARY Objectives: The purpose of this study was to measure the microshear bond strength (μSBS) of four different self-adhesive resin cements with/without 10-methacryloyloxydecyl dihydrogen phosphate (MDP)-containing primer to zirconium ceramics and to evaluate the effect of zirconia primers on these self-adhesive resin cements (SARCs). Methods and Materials: Zirconia blocks (20 × 20 × 8 mm3) were prepared and divided into eight groups (n=20). They were sandblasted (50 μm Al2O3) and treated as follows: no primer or primer (Z-Primer Plus). Four self-adhesive resin cements (MDP-containing: Permacem 2.0 [PC], Clearfil SA luting [CS]; non–MDP-containing: Rely-X U200 [RU], Maxcem Elite [ME]) were bonded to the zirconia surface. After thermocycling, a μSBS test was performed. The failure mode was analyzed using light microscopy. Statistical analysis of μSBS was performed using one-way analysis of variance and two-sample t-test with post hoc Tukey test. The loss rate was evaluated using the Fisher's exact test and χ2 test with post hoc Tukey test (p&lt;0.05). Results: Within the no primer groups, the PC and CS groups showed higher bond strength than the RU and ME groups. Comparing the μSBS of the no primer and primer groups in the same SARCs, the RU/P group was higher than the RU group, and the ME/P group was higher than the ME group. No significant difference was observed between the PC and PC/P groups and between the CS and CS/P groups. Conclusions: Non–MDP-containing SARC showed the increased bonding value with MDP-containing primer to zirconia ceramics. The bond strength of MDP-containing SARCs was not affected significantly by the use of zirconia primer.

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