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1.
J Prosthodont Res ; 64(3): 264-271, 2020 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-31445849

RESUMEN

PURPOSE: This study evaluated the effect of the use of a powder-type adhesive on masticatory performance and oral health related quality of life (OHRQoL) in patients with normal and resorbed mandibular ridges during adaptation period with complete dentures. METHODS: Forty-two edentulous subjects (12 men, 30 women) were distributed in four groups: normal mandibular ridges with adhesive, n = 10; normal mandibular ridges without adhesive, n = 10; resorbed mandibular ridges with adhesive, n = 11; resorbed mandibular ridges without adhesive, n = 11. Masticatory performance was evaluated by sieving method and OHRQoL by Oral Health Impact Profile in Edentulous Adults (OHIP-EDENT) inventory at 30, 60 and 90 days after the insertion of new complete dentures. Data were analyzed using 2-way ANOVA test and Generalized Estimating Equations (GEEs), α = 0.05. RESULTS: The use of adhesive resulted in better masticatory performance at 30 (35.76 ± 12.63%) and 60 days (30.06 ± 10.54%) after the insertion of the dentures and did not influence on OHRQoL in participants with normal ridges during the adaptation period. The use of adhesive did not interfere on masticatory performance during adaptation period and had a negative effect on masticatory discomfort/disability subscale OHRQoL at 30-day period [5.2(3.6, 6.8)] for resorbed mandibular ridges with new complete dentures. CONCLUSIONS: The use of adhesive can improve masticatory performance of new complete dentures users with normal mandibular ridges in the initial adaptation period up to 60 days after insertion. For resorbed ridges subjects, the use of adhesive had a negative impact on masticatory discomfort/disability OHRQoL at 30 days after insertion.


Asunto(s)
Boca Edéntula , Calidad de Vida , Adulto , Cementos Dentales , Dentadura Completa , Femenino , Humanos , Masculino , Masticación
2.
J Prosthodont Res ; 63(4): 421-427, 2019 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-31047845

RESUMEN

PURPOSE: The present cross-over study evaluated the masticatory function and maximum occlusal force of edentulous patients with complete dentures with bilateral balanced occlusion (BBO) and canine guidance (CG), with normal (NR) and resorbed mandibular ridges (RR). METHODS: Participants received new complete dentures and both occlusal concepts (BBO and CG) were applied for a period of 30 days each. The masticatory performance was evaluated with the sieving method; masticatory ability with a visual analog scale (VAS) and maximum occlusal force was assessed by means of a gnatodynamometer. Data were analyzed using repeated-measure ANOVA or Generalized Estimating Equations (GEEs), α = 0.05. RESULTS: Thirty women completed the trial. The height of mandibular ridge was significant for the masticatory performance (ANOVA, p < 0.001, NR = 46.35 ± 12.18%, RR = 30.39 ± 9.94%), regardless of the occlusion guidance. A significant effect of the occlusion guidance was observed for the maximum occlusal force (ANOVA, p = 0.021, CG = 31.99 ± 12.74 N, BBO = 28.37 ± 9.83 N). The occlusion guidance was not significant for the masticatory performance (ANOVA, p = 0.156) and the height of the mandibular ridge did not influence on the occlusal force (ANOVA, p = 0.060). The interaction of the factors (guidance × ridge) was not significant for masticatory performance (ANOVA, p = 0.184) and occlusal force (ANOVA, p = 0.236). The VAS scores showed a significant effect of the ridge on chewing of lettuce, resulting in greater ease (GEEs, p = 0.016) and chewing quality (GEE, p = 0.028) of this food for participants with resorbed ridges. Participants with CG reported greater ease of chewing fresh bread and beef, and expressed higher quality of chew raw carrot. Participants with CG and normal ridges exhibited the highest overall chewing ability, in comparison to BBO (Bonferroni, p < 0.05, CG = 91.9, BBO = 72.7). CONCLUSIONS: CG represents a viable alternative to the BBO in complete dentures with satisfactory clinical results related to the self-perception of chewing and occlusal force.


Asunto(s)
Resorción Ósea , Oclusión Dental , Estudios Cruzados , Diseño de Dentadura , Dentadura Completa , Femenino , Humanos , Masticación
3.
J Prosthodont ; 28(7): 757-765, 2019 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-29679427

RESUMEN

PURPOSE: The present randomized clinical trial compared the oral health-related quality of life (OHRQoL), peri-implant parameters, mandible movements, and maxillary complete denture movement during chewing between wearers of single- (1-IOD) and wearers of two-implant overdentures (2-IODs) for a period of 12 months. MATERIALS AND METHODS: Twenty-one complete denture wearers were randomly allocated into two parallel groups: 1-IOD (n = 11) or 2-IODs (n = 10). The validated Brazilian version of the OHIP-EDENT was used to evaluate the OHRQoL. A kinesiograph recorded maxillary complete denture movement during chewing of hard food testing (polysulphide impression material) and soft food testing (bread). Peri-implant parameters were also recorded: plaque index (PI), bleeding on probing (BOP), and probing depth (PD). The Friedman test was used to compare the OHRQoL data and peri-implant parameters among periods; the Mann-Whitney test was performed to compare the groups (1- and 2-IODs). One-way ANOVA and the Bonferroni test were used to compare mandible movement during chewing among periods, and the t-test for independent samples was used to compare the groups. Maxillary complete denture movement was analyzed using three-way ANOVA followed by the Bonferroni test. All statistical analyses were performed at α = 0.05. RESULTS: Both treatments led to better general OHRQoL in comparison to conventional complete dentures (p < 0.001). Better OHRQoL was observed among 2-IOD patients at the 12-month follow up (p = 0.034). Peri-implant parameters were similar irrespective of the group and follow-up period. Vertical opening was significantly higher among 1-IOD patients at 3 months (p = 0.038). Decreased maxillary denture vertical intrusions were observed with complete dentures in comparison with overdentures (p = 0.006), regardless of the food test (p = 0.251); however, vertical intrusion was significantly higher among 1-IOD patients (p = 0.043). CONCLUSIONS: This study suggested that 1-IOD can improve patient OHRQoL and may be similar to 2-IODs in preservation of both peri-implant parameters and masticatory movements.


Asunto(s)
Prótesis de Recubrimiento , Calidad de Vida , Brasil , Prótesis Dental de Soporte Implantado , Retención de Dentadura , Dentadura Completa Inferior , Humanos , Mandíbula , Masticación , Salud Bucal , Satisfacción del Paciente
4.
PLoS One ; 13(10): e0203951, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-30304005

RESUMEN

OBJECTIVES: To verify whether the Ultra Corega Cream and Corega Strip Denture Adhesive adhesives interfere in the microbial adhesion and biofilm formation by Candida albicans and Lactobacillus casei in single- and mixed-species settings, and observe whether synergistic or antagonistic relationships between these species occur. METHODS: Specimens made from heat-polymerized acrylic resin (Lucitone 550) were fabricated (n = 144) with a circular shape and standardized roughness (3.0 µm ±0.3 Ra) and were divided into three groups: Without Adhesive (WA), with Ultra Corega Cream adhesive (CA) and Corega Strips adhesive (SA). These groups were divided into three subgroups each: C. albicans single-species, L. casei single-species and C. albicans with L. casei (mixed-species). Microbial adhesion and biofilm formation assays were performed in duplicate at four distinct experimental times (n = 8 per experimental condition). The amount of each microorganism on the surfaces of the specimens was observed by counting of the Colony Forming Units (CFU) per substrate. Additional specimens were characterized by Scanning Electron Microscopy (SEM), with 18 specimens being used in this analysis (n = 18), 2 per experimental condition (n = 2). Two-way ANOVA and Tukey's test for multiple comparisons were employed, using α≤0.05. RESULTS: L. casei (mixed-species) adhered more on the WA substrate than the CA, while C. albicans (single- and mixed-species) adhered more on the SA. C. albicans, both single- and mixed-species adhered more than the L. casei (single- and mixed-species), regardless of the substrate. L. casei (single-species) formed more biofilm on the WA, but in its mixed cultivation, it had no difference of growth among the tested situations. C. albicans (single- and mixed-species) formed more biofilm on the SA than the CA, and the fungus formed more biofilm when compared to L. casei. In general, whenever a species was compared in its single- and mixed-species situation, no statistically significant difference was observed. SEM of biofilm formation assays demonstrated that L. casei single-species WA formed more biofilm than when the adhesives tested were used, and C. albicans (both single- and mixed-species) formed more biofilm on the SA than on the CA. CONCLUSIONS: (1) The two denture adhesives tested increased the adhesion of C. albicans but not of L. casei; (2) biofilm formation by C. albicans (single- and mixed-species) was increased on the SA; (3) Relations of synergism or antagonism was not observed between the two microorganisms studied.


Asunto(s)
Adhesión Bacteriana/efectos de los fármacos , Biopelículas/efectos de los fármacos , Cementos Dentales/farmacología , Retención de Dentadura/métodos , Biopelículas/crecimiento & desarrollo , Candida albicans/efectos de los fármacos , Candida albicans/fisiología , Recuento de Colonia Microbiana , Dentadura Completa , Lactobacillus casei/efectos de los fármacos , Lactobacillus casei/fisiología , Microscopía Electrónica de Rastreo , Especificidad de la Especie , Propiedades de Superficie
5.
J Prosthet Dent ; 119(3): 404-408, 2018 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-28689905

RESUMEN

STATEMENT OF PROBLEM: Although the cytotoxicity of denture adhesives has been widely assessed, data on the release of proinflammatory cytokines from oral epithelial cells are still scarce. PURPOSE: The purpose of this in vitro study was to evaluate the proinflammatory cytokines interleukin (IL) 1ß, IL-6, and tumor necrosis factor α (TNF-α) released from human oral keratinocytes after exposure to denture adhesives. MATERIAL AND METHODS: Eluates of the Ultra Corega cream, Corega powder Fixador Ultra, and Corega strip denture adhesives were created at 1% wt/vol after 24 hours of exposure in a Dulbecco modified Eagle medium culture. The release of IL-1ß, IL-6, and TNF-α was measured using a sandwich enzyme-linked immunosorbent assay after the oral epithelial cells (NOK-SI) had been exposed to the eluates for 3, 6, and 24 hours (n=6). RESULTS: IL-1ß release from the strip was higher at 3 hours compared with the control (Bonferroni post hoc test, P=.016). IL-6 releases from the cream and powder denture adhesives at 6 and 24 hours were higher than for the controls (Bonferroni post hoc test, P<.05). TNF-α release was not detectable in some groups and periods. CONCLUSIONS: In long periods, denture adhesive strips do not induce any change on cytokine release from human oral keratinocytes.


Asunto(s)
Citocinas/biosíntesis , Cementos Dentales , Retención de Dentadura , Queratinocitos/metabolismo , Mucosa Bucal/citología , Células Cultivadas , Humanos
6.
J Prosthet Dent ; 116(5): 749-755, 2016 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-27236596

RESUMEN

STATEMENT OF PROBLEM: Limited mandibular movements are one of the most important signs of temporomandibular disorders (TMDs) and may cause functional difficulties. PURPOSE: The purpose of this double-blind, randomized clinical trial was to evaluate the effect of treatment with only educational or education associated with self-care therapies on the pattern of mandibular movements of women with chronic painful TMDs. MATERIAL AND METHODS: Forty-two women were selected and randomly divided into 3 groups, control group (CG, n=13), education group (EG, n=16), and education and self-care group (ESG, n=13), according to the sequence of treatment they received. A kinesiograph device recorded mandibular movements during maximum mouth opening and mastication at baseline (T0) and at 30-day (T1) and 60-day (T2) follow-up. Kinesiographic data were statistically analyzed using 1-way ANOVA, followed by the Bonferroni test for multiple comparisons of means (α=.05). RESULTS: The ESG group demonstrated an improvement in the maximum vertical opening (MVO= 5.1 ±3.4 mm; P=.012) and anteroposterior mandibular movement (MAM) during maximum opening (7.4 ±9.5; P=.019), significantly higher than that of the EG (MVO=1.8 ±3.5 mm; MAM=0.8 ±5.0 mm) and the CG (MVO=0.9 ±3.8 mm; MAM=0.8 ±4.4 mm) after 30 days of follow-up. Moreover, at T1, vertical mandibular movement during mastication was significantly higher in the ESG group (17.4 ±1.7 mm) than in the EG group (15.0 ±2.8, P=.027). No significant differences were found between the women who received treatment with educational and self-care therapies for 60 days and the women who received this treatment for 30 days. CONCLUSIONS: In the short-term, education and self-care treatment positively influenced the mandibular movement pattern of women with chronic painful TMDs.


Asunto(s)
Educación del Paciente como Asunto , Autocuidado , Trastornos de la Articulación Temporomandibular/terapia , Adulto , Método Doble Ciego , Femenino , Humanos , Mandíbula , Masticación , Movimiento , Rango del Movimiento Articular
7.
J Prosthodont ; 25(6): 485-8, 2016 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-26916386

RESUMEN

PURPOSE: To assess the effect of brushing with different solutions on the abrasion resistance of two types of acrylic resin teeth. MATERIALS AND METHODS: Maxillary premolars from two types of acrylic teeth (Biotone and Biotone IPN) were divided into six groups (n = 12), according to the solution used during brushing: distilled water (control), coconut soap, or dentifrice. A mechanical brushing machine was used to simulate approximately 1 year of brushing (11,000 strokes). The weight loss (WL) of teeth was obtained from the difference between the initial (IW) and final weight (FW) of each specimen, and the mean of percentage of weight loss (PWL) was calculated for each group. Data were analyzed using the Kruskal-Wallis test, followed by Bonferroni's post-test comparison (α = 0.05). RESULTS: A statistically significant difference was found for the factor solution (p < 0.001). Brushing using dentifrice caused the highest values of weight loss (-0.50%), in comparison with the groups brushed with coconut soap (0.00%) or distilled water (0.00%). CONCLUSIONS: For both types of artificial teeth, brushing with dentifrice produced higher abrasion than brushing with coconut soap or water.


Asunto(s)
Diente Artificial , Cepillado Dental , Pastas de Dientes , Dentífricos , Humanos , Abrasión de los Dientes
8.
J Prosthet Dent ; 115(4): 462-8, 2016 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-26548879

RESUMEN

STATEMENT OF PROBLEM: The difficulty of removing denture adhesive is a common problem reported by users of these products. PURPOSE: The purpose of this clinical study was to investigate the effectiveness of different cleaning protocols for removing a denture adhesive (DA) and the influence on the oral microbiota. MATERIAL AND METHODS: Twenty participants wearing well-fitting complete dentures were instructed to use a denture adhesive 3 times a day during a 4-week trial, divided into 4 stages: (A) control-3 daily denture brushings using water at ambient temperature, (B)-3 daily denture brushings using water at ambient temperature plus coconut soap, (C)-3 daily denture brushings using water at ambient temperature plus dentifrice; (D)-3 daily denture brushings using water at ambient temperature combined with immersion in sodium perborate solution for 5 minutes before nocturnal sleep. After each 1-week stage, saliva specimens were collected. A dye was used to display and quantify the remaining DA on the internal surface of the maxillary dentures as a percentage. For microbiological analysis, the saliva was diluted and plated onto Petri dishes containing a nonselective culture medium and Candida spp culture media. After the incubation period, Candida species were identified and the number of colony forming units (CFU/mL) was calculated. RESULTS: A significant difference was found among the 4 cleaning methods for the quantification of remaining DA (Friedman, P=.036). Brushing the dentures with coconut soap, dentifrice, or water combined with immersion in sodium perborate solution was more effective in removing DA than brushing with only water. The cleaning methods did not influence the quantification of microorganisms in general or Candida albicans and other Candida species in particular. CONCLUSIONS: Brushing the dentures with coconut soap, dentifrice, or water combined with immersion in sodium perborate solution was more effective for removing cream-type denture adhesive than brushing with only water.


Asunto(s)
Adhesivos/química , Biopelículas/crecimiento & desarrollo , Limpiadores de Dentadura , Boca/microbiología , Carga Bacteriana , Recuento de Colonia Microbiana , Estudios Cruzados , Cementos Dentales , Humanos , Microbiota , Jabones , Propiedades de Superficie , Cepillado Dental
9.
J Contemp Dent Pract ; 16(2): 101-6, 2015 02 01.
Artículo en Inglés | MEDLINE | ID: mdl-25906799

RESUMEN

BACKGROUND: The characteristics of tissue conditioners support microorganism development that can threaten the health of the dentures user. PURPOSE: The object of this study was to evaluate the effect on antimicrobial activity, roughness and wettability surface of a tissue conditioners material combined with the antimicrobial polymer poly (2-tert-butilaminoethyl) methacrylate (PTBAEMA). MATERIALS AND METHODS: Specimens of tissue conditioner (Coe Soft(®)) were divided into three groups, according to the concentration of PTBAEMA incorporated (0, 10 and 25%). Antimicrobial activity was assessed by adherence assay of one of the microorganisms, Staphylococcus aureus, Streptococcus mutans and Candida albicans. Roughness measurements were made using a Mitutoyo SJ-400, and the mean arithmetic roughness values (Ra) obtained were used for the comparisons. The wettability properties were determined by contact angle measurements. RESULTS: The group containing 25% of PTBAEMA inhibited totally the S. aureus and S. mutans biofilm formation. A significant reduc tion in the S. aureus (Kruskal-Wallis, p = 0,001) and S. mutans (Kruscal-Wallis, p = 0,001) count for 10% PTBAEMA group compared with respective control group. No significant difference was found for C. albicans among PTBAEMA groups and control group (ANOVA, p > 0,05). Incorporating 10 and 25% PTBAEMA increased surface roughness and decreased contact angles (ANOVA and Tukey's post hoc tests, α = 5%). CONCLUSION: Incorporating 10% PTBAEMA into tissue conditioner increases wettability and roughness of tissue conditioner surface; and decreases the adhesion of S. mutans and S. aureus on material surface, but did not exhibit antimicrobial effect against C. albicans. SIGNIFICANCE: The PTBAEMA incorporated into tissue conditioner could prevent biofilm formation on elderly patient.


Asunto(s)
Antiinfecciosos/farmacología , Materiales Dentales/química , Alineadores Dentales , Metacrilatos/farmacología , Acondicionamiento de Tejidos Dentales/métodos , Adhesión Bacteriana/efectos de los fármacos , Biopelículas/efectos de los fármacos , Candida albicans/efectos de los fármacos , Humanos , Ensayo de Materiales , Metacrilatos/química , Viabilidad Microbiana/efectos de los fármacos , Staphylococcus aureus/efectos de los fármacos , Streptococcus mutans/efectos de los fármacos , Propiedades de Superficie , Humectabilidad
10.
Artículo en Inglés | MEDLINE | ID: mdl-25411739

RESUMEN

The aim of this study was to assess the impact of replacing conventional mandibular complete dentures with implant-supported fixed complete dentures (ISFDs) on the oral health-related quality of life (OHQOL) of edentulous patients and on the associated kinesiographic parameters. The patients had their complete dentures replaced by ISFDs and were assessed after 1, 2, 3, 6, and 12 months. An improvement of general OHQOL was observed 2 months after treatment with ISFDs. Kinesiographic recordings revealed significant mandibular vertical and horizontal opening increases and a greater vertical intrusion of the maxillary complete dentures during clenching after the treatment with ISFD.


Asunto(s)
Prótesis Dental de Soporte Implantado , Dentadura Completa , Salud Bucal , Calidad de Vida , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Boca Edéntula/rehabilitación , Resultado del Tratamiento
11.
J Prosthet Dent ; 112(5): 1182-7, 2014 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-24952882

RESUMEN

STATEMENT OF PROBLEM: Masticatory performance analysis of conventional complete denture wearers who use denture adhesives is scarce in the dental literature. PURPOSE: The purpose of this study was to assess the effect of the use of 2 denture adhesives on the masticatory performance of conventional complete denture wearers by means of a crossover study. MATERIAL AND METHODS: Forty individuals who were edentulous received new maxillary and mandibular complete dentures, and, after an adaptation period, were submitted to masticatory performance analysis without denture adhesive (control). The participants were randomly divided and assigned to 2 protocols: protocol 1, denture adhesive 1 (Ultra Corega cream tasteless) use during the first 15 days, followed by no use of denture adhesive over the next 15 days (washout), and then use of denture adhesive 2 (Ultra Corega powder tasteless) for 15 days; protocol 2, denture adhesive 2 (Ultra Corega powder tasteless) use during the first 15 days, followed by no use of denture adhesive during the next 15 days (washout), and then use of denture adhesive 1 (Ultra Corega cream tasteless) for 15 days. The masticatory performance was assessed immediately after the use of denture adhesive by means of the sieve method, in which participants were instructed to deliberately chew 5 almonds for 20 chewing strokes. Masticatory performance was calculated by the weight of comminuted material that passed through the sieves. Data were analyzed by a 1-way ANOVA for paired samples and the multiple comparison of means by using the Bonferroni test (α=.05). RESULTS: A significant increase in masticatory performance was noted after using the Ultra Corega cream (mean, 32.6%) and Ultra Corega powder (mean, 31.2%) when compared with the control group (mean, 19.8%) (P<.001). No significant difference was found between the 2 denture adhesives evaluated. CONCLUSION: The use of denture adhesive improved the masticatory performance of conventional complete denture wearers. No difference was found in masticatory performance with the use of cream or powder denture adhesive.


Asunto(s)
Adhesivos/uso terapéutico , Retención de Dentadura , Dentadura Completa , Masticación/fisiología , Anciano , Estudios Cruzados , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Boca Edéntula/rehabilitación , Pomadas , Tamaño de la Partícula , Polvos
12.
ImplantNews ; 11(3): 363-367, 2014. ilus
Artículo en Portugués | LILACS, BBO - Odontología | ID: lil-730881

RESUMEN

A utilização de diferentes métodos e materiais deve ser considerada durante o planejamento de próteses implantossuportadas. Complicações, como fraturas da base de resina acrílica, desgaste e fratura dos dentes, podem ocorrer com frequência, gerando a necessidade de um planejamento cuidadoso para cada paciente, o que pode tornar a seleção do tipo de tratamento mais complexa. Diante disso, este artigo descreve a reabilitação oral de um paciente totalmente edêntulo, portador de prótese tipo protocolo bimaxilar, que apresentava queixa estética, perda de dimensão vertical e fratura em dentes de resina acrílica do arco superior. Após o restabelecimento da dimensão vertical, realizou-se a substituição de suas próteses antigas por uma nova prótese tipo protocolo bimaxilar, sendo que a cerâmica foi utilizada como material de cobertura para o arco superior, e resina como material de cobertura para o arco inferior. Ao final do tratamento, o paciente recebeu placas oclusais lisas bimaxilares para proteger os dentes e implantes de possíveis hábitos parafuncionais. A forma como o tratamento foi conduzido permitiu uma resolução rápida e eficaz, com resultado estético e funcional muito favorável para o paciente.


The use of different methods and materials should be considered during the planning of implant-supported prostheses. Complications such as fractures of the acrylic resin base, wear and fracture of teeth can occur frequently, creating the need for careful planning for each patient, which can make the selection of the type of treatment more complex. Thus, this article describes the oral rehabilitation of a completely edentulous patient with bimaxillary fixed implant-supported prosthesis, with complaints on aesthetics, loss of vertical dimension and fracture of acrylic resin teeth of the upper arch. After the restoration of vertical dimension, his dentures were replaced with new bimaxillary implant-supported fixed prostheses, ceramic and acrylic resin were used as veneering material for maxilla and mandible, respectively. At the end of the treatment, the patient received bimaxillary flat occlusal splints to protect the teeth and implants of possible parafunctional habits. The approach for the treatment allowed a quick and effective resolution, with aesthetic and functional outcomes very favorable for the patient.


Asunto(s)
Humanos , Masculino , Persona de Mediana Edad , Resinas Acrílicas , Arcada Edéntula , Prótesis e Implantes
13.
Rev. odontol. UNESP (Online) ; 42(4): 237-242, jul.-ago. 2013. ilus, tab
Artículo en Inglés | LILACS-Express | LILACS | ID: lil-685536

RESUMEN

INTRODUCTION: The occurrence of stomatitis is common since the surface characteristics of the dentures may act as reservoirs for microorganisms and have the potential to support biofilm formation. PURPOSE: To assess the surface properties (wettability/roughness) and color stability of an acrylic resin combined with the antimicrobial polymer poly (2-tert-butylaminoethyl) methacrylate (PTBAEMA). MATERIAL AND METHOD: Thirty disc-shaped specimens of an acrylic resin (Lucitone 550) were divided into three groups: 0% (control); 5% and 10% PTBAEMA. Surface roughness values (Ra) were measured using a profilometer and wettability was determined through contact angle measurements using a goniometer and deionized water as a test liquid. Color data were measured with a spectrophotometer. Kruskal-Wallis and Dunn's test were used to compare roughness values. Wettability data were analyzed using ANOVA and Tukey's test. Color data were compared using the Student's t-test and ∆E values were classified according to the National Bureau of Standards (NBS). All statistical analyses were performed considering α=.05. RESULT: Significant differences (p<.05) were detected among the groups for roughness, wettability and color stability. According to the NBS, the color changes obtained in the 5% and 10% PTBAEMA groups were "appreciable" and "much appreciable", respectively. CONCLUSION: It could be concluded that PTBAEMA incorporation in an acrylic resin increased the roughness and wettability of surfaces and produced color changes with clinical relevance.


INTRODUÇÃO: A ocorrência de estomatite protética é relativamente comum uma vez que as superfícies das próteses bucais representam um ambiente propício para adesão de microrganismos orais e formação de biofilme. OBJETIVO: Avaliar as propriedades de superfície (molhabilidade/rugosidade) e estabilidade de cor de uma resina acrílica combinada com o polímero antimicrobiano poli (2-tert-butilaminoetil) metacrilato (PTBAEMA). MATERIAL E MÉTODO: Trinta espécimes em formato de disco de uma resina acrílica (Lucitone 550) foram divididos em três grupos: 0% (controle), 5% e 10% PTBAEMA. Os valores de rugosidade (Ra) foram medidos utilizando um rugosímetro, e a molhabilidade foi determinada através de medições de ângulo de contato utilizando um goniômetro e água deionizada como líquido teste. Dados de cores foram medidos com um espectrofotômetro. Os testes de Kruskal-Wallis e Dunn foram utilizados para comparar os valores de rugosidade. Os dados de molhabilidade foram analisados utilizando-se ANOVA e teste de Tukey. Os dados de cor foram comparados com o teste t de Student e valores ΔE foram classificados de acordo com o National Bureau of Standards (NBS). Todas as análises estatísticas foram realizadas considerando α = 0,05. RESULTADO: Diferenças significativas (p<0,05) foram detectadas entre os grupos para rugosidade, molhabilidade, e estabilidade de cor. De acordo com o NBS, as alterações de cor obtidas nos grupos 5% e 10% PTBAEMA foram "marcante" e "extremamente marcante", respectivamente. CONCLUSÃO: Pode-se concluir que a incorporação de PTBAEMA em uma resina acrílica aumentou a rugosidade e molhabilidade das superfícies e produziu alterações de cor com relevância clínica.

14.
Araraquara; s.n; 2013. 112 p. ilus.
Tesis en Portugués | LILACS, BBO - Odontología | ID: biblio-866889

RESUMEN

Objetivo: O objetivo deste estudo foi avaliar o efeito da utilização de um adesivo para prótese na satisfação e nos parâmetros cinesiográficos em usuários de próteses totais por meio de um estudo “cross-over”. Material e Métodos: Cinquenta pacientes desdentados receberam novas próteses totais bimaxilares. Após um período de adaptação, os participantes incluídos no estudo receberam uma sequência de tratamento: protocolo 1- utilização do adesivo para prótese durante os primeiros 15 dias, seguida por não utilização do adesivo os próximos 15 dias; protocolo 2- não utilização do adesivo durante os primeiros 15 dias; seguida por utilização do adesivo os próximos 15 dias. Os resultados foram avaliados após 15 dias de cada sequência de tratamento. Um questionário para avaliar a satisfação dos pacientes e um cinesiógrafo para registrar os movimentos mandibulares e o padrão de movimento da prótese total maxilar durante mastigação foram utilizados. O teste de “Wilcoxon” (α=0,05) e o “t-test” de student para amostras pareadas (α=0,05) foram utilizados para comparar o grau de satisfação dos pacientes e os dados cinesiográficos, respectivamente. Resultados: O adesivo para prótese melhorou significativamente a satisfação geral dos participantes (p<0,001). Os registros cinesiográficos mostraram um aumento significativo (1,7mm) no movimento mandibular vertical (p<0,001) e uma menor intrusão (0,3mm) da prótese total superior (p=0,002) durante a mastigação após o uso de adesivo. Conclusão: O uso de adesivo para prótese melhorou a satisfação dos usuários de próteses totais e gerou um aumento no movimento mandibular vertical e uma menor intrusão da prótese total maxilar durante a mastigação


Asunto(s)
Adhesivos , Estudios Cruzados , Dentadura Completa , Satisfacción del Paciente
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