ABSTRACT
El avance de la tecnología permite realizar cambios en la rehabilitación y estética, reduce los tiempos de trabajo y disminuye los riesgos que se presentan al momento de utilizar materiales convencionales para la toma de impresiones. Existen dos técnicas que se pueden emplear, la analógica y la digital; la primera presenta mayores riesgos que el operador no puede controlar, así como tiempos más prolongados. Este reporte describe la rehabilitación bucal en dos pacientes con desgaste dental, se optó por usar ambas técnicas, la analógica y la digital, como tratamiento; en la primera se empleó el encerado convencional y en la segunda el software Exocad para el encerado digital. Finalmente en ambos casos se aplicó (AU)
The advance of technology has allowed changes in rehabilitation and esthetics, providing shorter working times and reducing the risks that occur when using conventional materials for taking impressions. There are two techniques that can be used, analog and digital, the first one presents greater risks that the operator cannot control, as well as more time. This report describes the oral rehabilitation in patients with dental wear. The treatment was carried out using the analogical and digital techniques, the former using conventional waxing and the latter using Exocad software for the digital waxing; finally, in both cases the injection technique with high-load Flow resin was used (AU)
Subject(s)
Humans , Male , Female , Adult , Esthetics, Dental , Tooth Wear/rehabilitation , Patient Care Planning , Image Processing, Computer-Assisted , InjectionsABSTRACT
Introducción: las lesiones cervicales no cariosas (NCCL, por sus siglas en inglés) son un grupo de lesiones que afectan el área cervical del órgano dental causando hipersensibilidad dentinaria y defectos estéticos. Objetivo: analizar la literatura sobre las lesiones cervicales no cariosas, su etiología, consideraciones anatómicas, características morfológicas de la lesión y tratamientos no restaurativos. Material y métodos: se realizó una búsqueda en la base de datos PubMed, utilizando las palabras clave: non-carious cervical lesions OR noncarious cervical lesions OR tooth wear OR tooth erosion OR dental abfraction OR abfraction, recopilando un total de 78 artículos. Resultados: es necesario determinar la etiología antes de seleccionar las estrategias de tratamiento para las lesiones cervicales no cariosas. Conocer los distintos tipos de tejidos que componen al órgano dentario facilita la comprensión de los factores que participan en el desarrollo de las lesiones cervicales no cariosas. Esto permite que el tratamiento se enfoque más en la causa del problema que en los síntomas. Con esto podemos modificar diversos factores de manera interceptiva, los tratamientos de terapia con láser y compuestos tópicos son una estrategia mínimamente invasiva. Conclusiones: la mejor manera de describir a las lesiones cervicales no cariosas sería como una enfermedad multifactorial. Se debe prestar especial atención en los métodos de diagnóstico, identificando cofactores que propicien el avance de la lesión, como son la fricción y la biocorrosión. Esta revisión brinda datos que asocian a los factores oclusales como una de las principales causas de una enfermedad que afecta a más de la mitad de la población adulta (AU)
Introduction: non-carious cervical lesions (NCCL) are a group of lesions that affect the cervical area of the dental organ causing dentin hypersensitivity and cosmetic defects. Objective: to know, through a systematic review, the current state of non-carious cervical lesions. Material and methods: a search was conducted in the PubMed database, using the keywords: non-carious cervical lesions OR noncarious cervical lesions OR tooth wear OR tooth erosion OR dental abfraction OR abfraction, compiling a total of 78 articles. Results: determining etiology is necessary before selecting treatment strategies for non-carious cervical lesions (NCCL). Know the different types of tissues that make up the dentary organ, facilitate the understanding of the factors involved in the development of noncarious al cervical lesions. This allows treatment to focus more on the cause of the problem than on symptoms. With this we can modify various factors in an interceptive way, laser therapy treatments and topical compounds, are a minimally invasive strategy. Conclusions: the best way to describe non-carious al cervical lesions would be as a multifactorial disease to which special attention should be paid to both diagnostic methods, identifying cofactors that promote the progression of injury, such as friction and biocorrosion. This review provides data that associates occlusal factors as one of the main causes of a disease that affects more than half of the adult population (AU)
Subject(s)
Humans , Tooth Erosion , Tooth Attrition , Friction , Dental Enamel/physiopathology , Dental Occlusion, Traumatic/complicationsABSTRACT
Objective: This study evaluated Proanthocyanidin protective effect on dentin subjected to erosion and its inhibition on degradation of the demineralized organic matrix (DOM). Material and Methods: The tested groups were: G1 - 10% Proanthocyanidin gel (test group), G2 - 1.23% NaF (positive control 1), G3 - 0.012% Chlorhexidine (positive control 2) and G4 Placebo (negative control with no active compound) and two methodologies were performed: contact profilometry and ICTP ELISA method. To quantify dentin wear, profilometry was performed. Data were submitted to Analysis of Variance followed by Fisher's LSD Test. To assess the collagen degradation, ICTP ELISA method was performed. Data were submitted to the Kruskal-Wallis followed by the Dunn Ìs test. Simple linear regression and Pearson Correlation test were also performed (p<0.05). Results: The profilometry showed significantly lower wear of G1 when compared to other groups and G2, G3 and G4, which did not present significant difference among them. In the ICTP ELISA analysis, G1 and G4 did not show significant differences and the same happened between G2 and G3. However, G1 and G4 had lower values of collagen degradation compared to groups G2 and G3. Data showed that degraded DOM is a significant predictor to explain the values obtained through the ICTP ELISA. Conclusions: The results allow to verify that 10% proanthocyanidin provided less tooth wear and decreased degradation of the DOM, suggesting a good ability to prevent dentin erosion. The regression analysis also suggests that contact profilometry is a good strategy to quantify dentin wear (AU)
Objetivo: Este estudo avaliou o efeito protetor da proantocianidina na dentina submetida à erosão e sua inibição na degradação da matriz orgânica desmineralizada (MOD). Material e Métodos: Os grupos testados foram: G1 - gel de Proantocianidina 10% (grupo teste), G2 - NaF 1,23% (controle positivo 1), G3 - Clorexidina 0,012% (controle positivo 2) e G4 - Placebo (controle negativo sem princípio ativo) e duas metodologias foram realizadas: perfilometria de contato e método ICTP ELISA. Para quantificar o desgaste da dentina, a perfilometria foi realizada. Os dados foram submetidos à Análise de Variância seguida do Teste LSD de Fisher. Para avaliar a degradação do colágeno, foi realizado o método ICTP ELISA. Resultados: Os dados foram submetidos ao teste de Kruskal-Wallis seguido do teste de Dunn. Regressão linear simples e teste de correlação de Pearson também foram realizados (p<0,05). A perfilometria mostrou desgaste significativamente menor do G1 quando comparado aos outros grupos e G2, G3 e G4, que não apresentaram diferença significativa entre si. Na análise ICTP ELISA, G1 e G4 não apresentaram diferenças significativas e o mesmo ocorreu entre G2 e G3. No entanto, G1 e G4 apresentaram valores menores de degradação do colágeno em relação aos grupos G2 e G3. Os dados mostraram que a MOD degradada é um preditor significativo para explicar os valores obtidos pelo ICTP ELISA. Conclusão: Os resultados permitem verificar que a proantocianidina a 10% proporcionou menor desgaste dentário e diminuição da degradação da MOD, sugerindo uma boa capacidade de prevenir a erosão dentinária. Também sugere que a perfilometria de contato é uma boa estratégia para quantificar o desgaste da dentina (AU)
Subject(s)
Preventive Health Services , Tooth Erosion , Proanthocyanidins , Dentin , Tooth WearABSTRACT
Objective: Evaluate the protective effect of artificial saliva formulations associated or not with mucin on dentin. Materials and Methods: Bovine dentin specimens were randomly allocated to 10 groups (n = 20) according to the artificial saliva tested and the presence or absence of mucin: Amaechi et al. (1998); Klimek et al. (1982); Vieira et al. (2005) and Eisenburger et al. (2001) and deionized water (control). Samples were submitted to an erosive cycle consisting of two immersions of 120 min in the saliva, followed by 1 min in hydrochloric acid solution, and new storage in saliva for 120 min. Surface loss (µm) was measured before and after the cycle. Data were analyzed using 2-way ANOVA and Tukey's test (p < 0.05). Results: A significant difference was observed for the saliva formulation but not for the presence of mucin. The deionized water provided the highest surface loss and the Eisenburger's saliva formulation the lowest. The groups testing the Amaechi, Klimek, and Vieira saliva did not present significant differences. Conclusion: Eisenburger's saliva formulation provides a higher protective effect against dentin erosion. The presence of mucin did not increase the erosion-preventive effect of artificial saliva formulations. (AU)
Objetivo: Avaliar o efeito protetor de formulações de saliva artificial associadas ou não à mucina sobre a dentina submetida a erosão. Material e Métodos: Espécimes de dentina bovina foram alocados em 10 grupos (n = 20) de acordo com a saliva testada e a presença ou ausência de mucina: . Amaechi et al. (1998); Klimek et al. (1982); Vieira e cols. (2005), Eisenburger et al (2001) e agua deionizada (controle). As amostras foram submetidas a um ciclo erosivo composto por duas imersões de 120 min na saliva, seguidas de 1 min em solução de ácido clorídrico e novo armazenamento na saliva por 120 min. A perda de superfície (µm) foi medida antes e depois do ciclo. Os dados foram analisados usando ANOVA 2 fatores e teste de Tukey (p <0,05). Resultados: Foi observada diferença significativa para a formulação de saliva, mas não para a presença de mucina. A água deionizada proporcionou a maior perda de superfície e a formulação de saliva de Eisenburger a menor. Os grupos que testaram a saliva Amaechi, Klimek e Vieira não apresentaram diferenças significativas entre si. Conclusão: A formulação de saliva de Eisenburger fornece o maior efeito protetor contra a erosão dentinária e a presença de mucina não aumentou o efeito preventivo de erosão de formulações de saliva artificial (AU).
Subject(s)
Saliva, Artificial , Tooth Erosion , Tooth Wear , MucinsABSTRACT
Com base no desenvolvimento da odontologia adesiva, restaurações minimamente invasivas em cerâmica são utilizadas como alternativas para restaurar um dente. As cerâmicas odontológicas são amplamente aplicadas na área odontológica principalmente devido à sua estética e resistência mecânica. Uma das propriedades da cerâmica a ser bem conhecida antes de seu uso, é a resistência ao desgaste que deve ser compatível com o comportamento de desgaste do antagonista para evitar desempenhos indesejados. Portanto, vários métodos têm sido realizados para avaliar o comportamento do desgaste dos materiais cerâmicos considerando diferentes condições presentes no complexo meio oral. Este estudo teve como objetivo compilar os métodos utilizados para investigar o desgaste das cerâmicas odontológicas e descrever os mecanismos de desgaste envolvidos nos mesmos. A obtenção e análise de dados também é abordada para discutir os resultados obtidos a partir de diferentes métodos, bem como a análise clínica do desgaste e perspectivas futuras sobre esse tema. Em conclusão, muitas metodologias estão disponíveis para medir o desgaste cerâmico. Portanto, os métodos devem ser selecionados com base na relevência clínica de cada estudo e devem seguir parâmetros previamente relatados para padronização, permitindo a comparação da literatura (AU)
Based on the development of adhesive dentistry, minimally invasive restorations in ceramics are used as alternatives to restore a tooth. Dental ceramics are largely applied in the dentistry field mainly due to their esthetic and mechanical strength. One of the ceramic properties to be well known before its use is the wear resistance that should be compatible with the antagonist wear behavior to avoid unwanted performance. Therefore, several methods have been performed to assess the ceramic materials wear behavior considering different conditions present in the complex oral medium. This study aimed to compile the methods used to investigate dental ceramics wear and to describe the wear mechanisms involved on them. Obtaining and analyzing data is also addressed to discuss the results obtained from different methods, as well as the clinical analysis of wear and future perspectives on this topic. In conclusion, many methodologies are available to measure the ceramic wear. Therefore, the methods must be selected based on the clinical significance of each study and should follow previously reported parameters for standardization, allowing literature comparison. (AU)
Subject(s)
Metal Ceramic Alloys , Dental Restoration Wear , Dental Materials , Tooth Wear , MethodsABSTRACT
La alta prevalencia de desgaste dental erosivo producido por la ingestión frecuente de bebidas gaseosas, se ha convertido en uno de los principales problemas de salud bucal en niños, adolescentes y adultos jóvenes, cuyo tratamiento deviene en desafío para los profesionales de la salud. La investigación se propuso evaluar el efecto erosivo exógeno de las bebidas gaseosas, sobre el tejido dentario mediante el proceso de termociclado in vitro, en el que se sometieron 50 premolares extraídos a la experiencia de exposición a una bebida gaseosa, bajo condiciones de experimentación, resultando una diferencia significativa entre el peso inicial pre termociclado en cada pieza y el peso final obtenido después del proceso, lo cual demuestra el efecto negativo del consumo de bebidas gaseosas. En ese mismo sentido, y como parte de esta investigación, se evaluó los efectos beneficiosos de los probióticos como la L-alanina como suplemento de las bacterias beneficiosas a la salud bucal como el Lactobalilos rhamnosus GG que logran detener el avance de bacterias patógenas y oportunistas como el Streptococcus mutans. Los resultados mostraron que a medida que aumenta la concentración del probiótico, mayor es la disminución del número de unidades formadoras de colonias y de las biopelículas de Streptococcus mutans. Además, la investigación aborda la percepción del riesgo en estudiantes, de ingestión de bebidas gaseosas en la erosión dentaria y los criterios que sobre el tema tienen sus profesores tutores(AU)
The high prevalence of erosive dental wear caused by the frequent ingestion of soft drinks has become one of the main oral health problems in children, adolescents and young adults, whose treatment becomes a challenge for health professionals. The research aimed to evaluate the exogenous erosive effect of soft drinks on dental tissue through the in vitro thermocycling process, in which 50 extracted premolars were subjected to the experience of exposure to a soft drink, under experimental conditions, resulting in a significant difference between the initial pre-thermocycling weight in each piece and the final weight obtained after the process, which demonstrates the negative effect of the consumption of soft drinks. In that same sense, and as part of this research, the beneficial effects of probiotics such as L-alanine were evaluated as a supplement for beneficial bacteria for oral health such as Lactobalilos rhamnosus GG, which manage to stop the advance of pathogenic and opportunistic bacteria such as Streptococcus mutans. The results showed that as the concentration of the probiotic increases, the decrease in the number of colony-forming units and biofilms of Streptococcus mutans is greater. In addition, the research addresses the perception of risk in students, of ingestion of soft drinks in dental erosion and the criteria that their tutor teachers have on the subject(AU)
Subject(s)
Humans , Male , Female , Adult , Middle Aged , Arginine , Streptococcus mutans , Biofilms , Lacticaseibacillus rhamnosus , Tooth Wear , Bacteria , Tooth Erosion , Carbonated Beverages , Oral Health , Probiotics , EatingABSTRACT
Background: Bruxism is defined as repetitive masticatory muscle activity characterized by clenching or grinding of the teeth and it has been related to psychological factors, such as personality traits, anxiety and stress. Objective: To investigate association between stress and bruxism among university students. Materials and methods:Lipp's Stress Symptoms Inventory for Adults (LSSI) was applied to 253 university students in Diamantina, Brazil. The y were clinically evaluated to verify dental wear. The non-instrumental evaluation of probable bruxism was determined by the patients' reports. Sociodemographic variables and self-reported stress data were collected by usi ng the questionnaire. The chi-square test was used, and significance level of 5% ( p<0.05) was adopted. Results: The prevalence of bruxism was 45.8% and stress, 37.9%. There was no significant association between the presence of stress diagnosed by ISSL and bruxism (p = 0.815). Among the students diagnosed as stressed, 31.6% were in the resistance phase. Self-reported stress was associated with the habit of tooth grinding (p < 0.001). Conclusions: No association was found between stress and bruxism. Nevertheless, the prevalence of bruxism among these students was considered high.
Fundamento: O bruxismo é definido como atividade muscular repetitiva da mastigação caracterizada pelo ranger dos dentes e tem sido relacionado a fatores psicológicos, como traços de personalidade, ansiedade e estresse. Objetivo: Verificar a associação entre estresse e bruxismo em universitários. Materiais e métodos:O Inventário de Sintomas de Stress para Adultos de Lipp (ISSL) foi aplicado a 253 estudantes universitários em Diamantina, Brasil. Eles foram avaliados clinicamente para verificar o desgaste dentário. A avaliação não instrumental de provável bruxismo foi determinada pelos relatos dos pacientes. Variáveis sociodemográficas e dados de estresse autorreferido foram coletados por meio do questionário. Foi utilizado o teste do qui-quadrado e adotado nível de significância de 5% (p <0,05). Resultados: A prevalência de bruxismo foi 45,8% e estresse, 37,9%. Não houve associação significativa entre a presença de estresse diagnosticado pelo ISSL e bruxismo (p = 0,815). Entre os alunos com diagnóstico de estresse, 31,6% encontravam-se na fase de resistência. O estresse autorreferido foi associado ao hábito de ranger os dentes (p <0,001). Conclusões: Não foi encontrada associação entre estresse e bruxismo. Apesar disso, a prevalência de bruxismo entre esses estudantes foi considerada alta.
ABSTRACT
Objetivo: este estudo tem como objetivo avaliar a associação entre ansiedade, hábitos alimentares, parafuncionais, condições sistêmicas, hábitos de higiene oral em associação com a ansiedade de pacientes com lesões cervicais dentárias não cariosas (LCNCs) em uma população. Material e Métodos: por meio de um estudo quantitativo, observacional, 100 pacientes, obtidos por cálculo do tamanho da amostra, com presença de LCNCs, foram avaliados por exame clínico e cálculo amostral; entre 20 e 58 anos, com idade média de 37 anos. Os dados foram coletados por meio de um questionário elaborado por um pesquisador previamente calibrado, referente à avaliação médica, odontológica, de histórico social e de ansiedade. Após a obtenção dos dados, eles foram tabulados e submetidos à análise estatística pelo teste binomial exato de Fisher de duas proporções, adotando um nível de significância de 5%. Resultados: o consumo de bebida gaseificada (81,6%), frutas cítricas (76,3%), frequência de escovação dentária igual ou superior a três vezes ao dia (100%) e abrasividade do creme dental (100%) foram significativamente associados à presença de NCCL (p = 0,0001). Doença do refluxo gastrointestinal, xerostomia, bulimia e anorexia demonstraram associação negativa com o NCCL (p=1,000). A ansiedade não mostrou relação direta com a NCCL na população estudada (36,8%). Conclusão: assim, pode-se concluir que não houve associação direta entre a presença de lesões cervicais não cariosas e a ansiedade
Objective: This study evaluated the association between parafunctional anxiety, eating habits, systemic conditions and assessment of oral hygiene habits with dental non-carious cervical lesions (NCCL). Material and Methods: this quantitative, observational study included 100 patients between 20 and 58 years old (mean of 37 years) with NCCL evaluated by clinical examination and sample calculation. The data were collected with use of a questionnaire made by a previously calibrated researcher, which referred to medical, dental, social history and anxiety assessments. After obtaining the data they were tabulated and subjected to statistical analysis using Fisher's exact two-proportion binomial test, adopting a 5% significance level. Results: consumption of carbonated drinks (81.6%), citrus fruits (76.3%), tooth brushing frequency equal or higher than three times a day (100%) and abrasiveness of toothpaste (100%) were significantly associated with presence of NCCL (p=0.0001). Gastrointestinal reflux, xerostomia, bulimia and anorexia showed negative association with NCCL (p=1.000). Anxiety was not directly associated with NCCL in the study population (36.8%). Conclusion: there was no direct association between the presence of non-carious cervical lesions and anxiety
Subject(s)
Anxiety , Tooth Injuries , Tooth Injuries/diagnosis , Tooth WearABSTRACT
PURPOSE: To investigate and compare the surface roughness (SR), weight and height of monolithic zirconia (MZ), ceramometal (CM), lithium disilicate glass ceramic (LD), composite resin (CR), and their antagonistic human teeth enamel. MATERIALS AND METHODS: 32 disc shaped specimens for the four test materials (n=8) and 32 premolars were prepared and randomly divided. SR, weight and height of the materials and the antagonist enamel were recorded before and after subjecting the specimens to 240,000 wear-cycles (49 N/0.8 Hz/5℃/50℃). SR, height, weight, and digital microscopic qualitative evaluation were measured. RESULTS: CM (0.23 + 0.08 µm) and LD (0.68 + 0.16 µm) exhibited the least and highest mean difference in the SR, respectively. ANOVA revealed significance (P=.001) between the materials for the SR. Paired T-Test showed significance (P < .05) for the pre- and post-SR for all the materials. For the antagonistic enamel, no significance (P=.987) was found between the groups. However, the pre- and post-SR values of all the enamel groups were significant (P < .05). Wear cycles had significant effect on enamel weight loss against all the materials (P < .05). CR and MZ showed the lowest and highest height loss of 0.14 mm and 0.46 mm, respectively. CONCLUSION: MZ and CM are more resistant to SR against the enamel than LD and CR. Enamel worn against test materials showed similar SR. Significant variations in SR values for the tested materials (MZ, LD, CM, and CR) against the enamel were found. Wear simulation significantly affected the enamel weight loss against all the materials, and enamel antagonist against MZ and CM showed more height loss.
Subject(s)
Humans , Bicuspid , Ceramics , Dental Enamel , Evaluation Studies as Topic , Glass , Lithium , Tooth , Tooth Wear , Weight LossABSTRACT
Dental erosion is frequently overlooked in clinical practice. The management of erosion-induced damage to the dentition is often delayed, such that extensive occlusal rehabilitation is required. These cases can be diagnosed by a careful clinical examination and a thorough review of the patient's medical history and/or lifestyle habits. This case report presents the diagnosis, categorization, and management of a case of gastro-esophageal reflux disease-induced palatal erosion of the maxillary teeth. The early management of such cases is of utmost importance to delay or prevent the progression of damage both to the dentition and to occlusal stability. Non-invasive adhesively bonded restorations aid in achieving this goal.
Subject(s)
Composite Resins , Dental Bonding , Dentition , Diagnosis , Gastroesophageal Reflux , Life Style , Rehabilitation , Splints , Tooth , Tooth Erosion , Tooth WearABSTRACT
La erosión dental corresponde a la pérdida irreversible de los tejidos superficiales del diente debido a la acción química de ácidos, donde no participan las bacterias. Se ha transformado en una afección común a nivel mundial, afectando especialmente a la población infantil por el alto consumo de bebidas ácidas y carbonatadas. Dentro de su etiología se encuentran factores de riesgo tanto intrínsecos, producidos por el propio organismo, como extrínsecos, que no tienen su origen en el mismo, pero se relacionan directamente con él. El objetivo de este artículo es realizar una revisión de la literatura sobre los posibles factores de riesgo asociados a la presencia de erosión dental en niños.
involved. It has become a common condition worldwide, especially in children, affected by the high consumption of acidic and carbonated drinks. Within its etiology there are both intrinsic risk factors, produced by the body itself, and extrinsic, whose origin is not in the body, but are directly related to it. The aim of this article is to review the literature on the potential risk factors associated with the presence of dental erosion in children.
Subject(s)
Humans , Child , Tooth Erosion/epidemiology , Tooth Erosion/etiology , Carbonated Beverages/adverse effects , Gastroesophageal Reflux/complications , Risk Factors , Tooth Wear/epidemiology , Fruit and Vegetable Juices/adverse effectsABSTRACT
A maioria das doenças dos animais de natureza e cativeiro encontra-se associada à proximidade humana, que resulta da fragmentação e degradação do habitat destes animais, no isolamento das espécies e no contato mais próximo entre estes e animais domésticos e o homem. Foram estudados os sincrânios de 104 mãos-peladas (Procyon cancrivorus) por meio de avaliação direta, preenchimento de ficha odontológica veterinária e documentação fotográfica, que relataram anormalidades encontradas, as quais foram classificadas e contabilizadas para fins estatísticos. Os achados deste trabalho aludem que os animais de cativeiro foram mais acometidos com as lesões relacionadas à doença periodontal, como cálculo, reabsorção óssea alveolar, deiscência, fenestração, exposição de furca, além de maloclusão, apinhamento dentário e os níveis mais graves de desgaste dentário. Os animais de vida livre apresentaram mais altos índices de fraturas, perdas dentárias ante-morte e escurecimento dentário, que caracterizam maior trauma dentário, durante o processo alimentar. Pretendeu-se, assim, estabelecer um parâmetro do estado de saúde oral da espécie estudada, sua frequência e se esta apresenta as mesmas enfermidades orais em vida livre e em cativeiro, relacionando a prevalência de afecções orais com características da ecologia da espécie.
Most diseases of animals in nature and captivity is linked to human proximity, resulting from habitat fragmentation and degradation of these animal habitats, the isolation of the species and the close contact between them and domestic animals and manhood. We studied 104 crab-eating raccoons (Procyon cancrivorus) skulls by direct assessment of sheet filling veterinary dental and photographic documentation reporting these abnormalities, which were classified and recorded for statistical purposes. The findings show that the captive animals were most affected with injuries related to periodontal disease, such as calculus, alveolar bone resorption, dehiscence, fenestration, furcation exposure, as well as malocclusion, crowding and severe levels of tooth wear. The free-living animals showed the highest rates of fractures, ante-mortem tooth loss and tooth blackout, which feature larger dental injuries during the feeding process. The intention was therefore to establish a parameter of oral health status of the species studied, their frequency and whether it has the same oral diseases in the wild life and in captivity, relating the prevalence of oral diseases with ecological characteristics of the specie.
Subject(s)
Animals , Mouth/physiopathology , Raccoons/anatomy & histology , Dentistry/veterinary , Feeding BehaviorABSTRACT
Aim: The purpose of this study was to determine the correlation between pulp stones and cardiovascular disorders, Type II diabetes mellitus, autoimmune disorders and dental wear defects. This study also aims to evaluate the frequency of pulp stone in population of Dakshina Kannada district (Karnataka, India) and to determine association of pulp stones in different sexes, tooth type, dental arches and sides. Patients and Methods: A total of 1432 teeth of five groups were examined, comprising of patients with C.V.S. disorders; Type II diabetes mellitus, autoimmune disorders, dental wear defects and control group. Teeth were examined under 2Χ magnification on radio visiograph (RVG) and conventional intra-oral periapical radiograph. The presence or absence of pulp stones were recorded. Statistical Analysis Used: Chi-square analysis was used to compare the frequency of occurrence of pulp stones between sexes, tooth type, dental arches and sides. Results: Pulp stones were found in 134 (9.35%) of 1432 teeth detected. Significantly, higher numbers of pulp stones were recorded in patients with cardiovascular disorder (15.86%) than other groups. The occurrence of pulp stones were significantly higher in molars (18.29%) than premolars (6.6%) and in maxillary arch (12.36%) than in mandibular arch (5.95%). No significant difference was found between sexes and sides. Conclusion: Positive correlation was found between systemic disorder and pulp stones. Cardiovascular patients had maximum number of pulp stones followed by dental-wear defects and least number of pulp stones were evident in control group.
Subject(s)
Adult , Age Factors , Autoimmune Diseases/complications , Bicuspid/diagnostic imaging , Cardiovascular Diseases/complications , Chronic Disease , Dental Arch/diagnostic imaging , Dental Pulp Calcification/complications , Dental Pulp Calcification/diagnostic imaging , Diabetes Mellitus, Type 2/complications , Female , Humans , Male , Mandible/diagnostic imaging , Maxilla/diagnostic imaging , Middle Aged , Molar/diagnostic imaging , Radiography, Bitewing , Radiography, Dental, Digital , Sex Factors , Tooth Wear/complications , Young AdultABSTRACT
Esse estudo in vitro avaliou o efeito de dentifrícios com diferentes formulações no desgaste do esmalte dental quando submetido ao tratamento clareador caseiro com gel a base de peróxido de carbamida em diferentes concentrações. Foram avaliados os efeitos de nove grupos experimentais, resultantes da combinação de três agentes clareadores - Whiteness Perfect 10% (PC10%), Whiteness Perfect 16% (PC16%) e saliva artificial (SA), como controle - e de três dentifrícios - Enamel Care (EC), Restore (RE) e Colgate Total 12 (CO), como controle. A amostra foi constituída de 99 fragmentos de esmalte bovino (n=11). Os agentes clareadores ou a saliva artificial foram aplicados na superfície de cada fragmento, que foi recoberto por uma moldeira individual e, então, imerso em um recipiente fechado contendo saliva artificial por 4 horas. Após esse período, os espécimes foram submetidos aos ensaios abrasivos, utilizando-se uma suspensão (slurry) obtida pela mistura de um dos dentifrícios com água destilada e deionizada. No restante do período diário, os grupos experimentais e controle foram mantidos em saliva artificial. Este ciclo clareamento/escovação foi realizado por 11 dias. A leitura de desgaste superficial foi realizada por meio de perfilômetro. O teste de Friedman foi significativo (p<0,0001). Os grupos SA/CO e SA/EC apresentaram os menores valores de desgaste, significativamente diferente do PC16%/RE. Os demais grupos apresentam valores intermediários sem diferenças entre os demais. Sugere-se que o gel a base de peróxido de carbamida a 16% utilizado neste estudo, deveria ser utilizado em associação com os dentifrícios que contenham flúor em sua composição.
This in vitro study evaluated the effect of dentifrices with different formulations in the wear of enamel submitted to treatment with carbamide peroxide bleaching agents in different concentrations. Nine experimental groups (n=11) were evaluated, resulting from the combination of three bleaching agents - Whiteness Perfect 10% (PC10%), Whiteness Perfect 16% (PC16%) and artificial saliva (SA), as control - and three dentifrices - Enamel Care (EC), Restore (RE) and Colgate Total 12 (CO), as control. The experimental units consisted of 99 bovine enamel slabs, which were exposed to one of the bleaching agent or artificial saliva. During the bleaching process, the specimens were covered with a tray and individually kept in artificial saliva for 4 hours. Subsequently, the experimental units were subject to brushing abrasion, using slurry obtained by mixing each one of the dentifrices with deionized and distilled water. During the remaining time, the specimens were individually maintained in containers with artificial saliva. These procedures were repeated over 11 consecutive days. The wear depth was measured using a profilometer. Friedman's test was significant (p<0.0001). The groups SA/CO and SA/EC had the lowest wear value differing significantly from group PC16%/RE. The other groups showed intermediate values. The results suggested that treatment with 16% carbamide peroxide bleaching agent used in this study should be used in combination with a fluoride dentifrice.
ABSTRACT
The aim of present study was to evaluate the wear coeficient of different dental materials submited to ballcrattering test. Different restorative materials were compared to bovine enamel. The samples were made with nylon matrix stripes and had 7mm diameter and 2mm thickness. The samples were submitted to the ballcratering test in a Calowear tribometer (CSEM Instruments Advanced Mechanical Surface Testing) and maded six measures in each sample with different revolutions of the ball: 10, 20, 30, 40, 50 and 60 revolutions. After the crattering generation the samples were avaliated to a Zeiss Axiotech Vario Microscope with SVGA Cam and all cratters photographed. After, the photos were evaluated at UTHSCSA ImageTool for Windows 3.0 and the meaning of measured radius were inserted at SigmaPlot, that gave the wear coefficients by linear regression. To bovine enamel the coefficient was 3,83 X 10-14 m²/N, to microhybrid resin was 3,6542 x 10-14 m²/N, 2,06 x 10-12 m²/N to amalgam and 2,18 x 10-12 m²/N to acrylic resin. In conclusion, bovine teeth presented higher wear resistance and lower wear coefficient than composite resin, amalgam and acrylic resin.
O objetivo do presente estudo foi avaliar o coeficiente de resistência ao desgaste de diferentes materiais odontológicos submetidos ao ensaio de micro-abrasão através da metodologia de ball-crattering. Para isso foram avaliados diferentes materiais restauradores em comparação com o esmalte bovino. As amostras foram confeccionadas através de matrizes de nylon bipartida, com 7mm de diâmetro e 2mm de espessura em negativo e após, a resistência ao desgaste foi avaliada em um ensaio de micro abrasão (Ball cratering test) realizado em tribômetro modelo Calowear (CSEM Instruments Advanced Mechanical Surface Testing). Em cada corpo de prova foram feitas seis medições com variação no número de voltas realizadas pela esfera: 10, 20, 30, 40, 50 e 60 voltas. Após a realização das crateras o corpo de prova foi levado a um Zeiss Axiotech Vario Microscope com câmera SVGA acoplada onde foram fotografadas todas as crateras geradas e após, foram analisadas em UTHSCSA ImageTool for Windows versão 3.0, os valores de raio médio das marcas foram, então levados ao SigmaPlot versão 8.0 que através da correlação dos dados determinou o coeficiente de desgaste através de uma regressão linear. Para os corpos de esmalte bovino foi encontrado o coeficiente de desgaste de 3,83 X 10-14 m²/N, para resina composta micro híbrida 3,6542 x 10-14 m²/N, para amálgama de prata 2,06 x 10-12 m²/N e para resina acrílica autopolimerizável foi de 2,18 x 10-12 m²/N. Após a execução dos ensaios chega-se a conclusão que o esmalte bovino apresentou maior resistência e menor coeficiente de desgaste, seguido por resina composta, amálgama de prata e resina acrílica autopolimerizável.
Subject(s)
Animals , Cattle , Acrylic Resins , Composite Resins , Dental Amalgam , Dental Restoration Wear , In Vitro TechniquesABSTRACT
En Odontología, un problema observado constantemente en pacientes adultos en este inicio de siglo es sin duda, el desgaste dental patológico. Este tipo de desgaste ocurre cuando existe pérdida acentuada de la estructura dentaria, lo que generalmente ocasiona el compromiso estético de los dientes antero superiores. En consecuencia, la sociedad se está concientizando sobre la importancia de la salud y de la estética, de esta manera, la demanda por tratamientos estéticos rehabilitadores en casos de desgaste dental patológico ha aumentado. La rehabilitación estética puede ser realizada tanto por medio de tratamientos directos como indirectos. Debido a las ventajas de las resinas compuestas, el presente trabajo tiene por finalidad describir la técnica operatoria para el restablecimiento de la guía anterior con resina compuesta, mediante la técnica de estratificación, que permite simular las características ópticas de la estructura dental. Así, con la evolución de los sistemas adhesivos, asociado a las mejoras en las propiedades químicas, mecánicas y estéticas de las resinas compuestas, tratamientos restauradores extensos, como la reconstrucción directa de las guías anteriores en los casos de desgaste dental patológico, se tornan viables.
In Dentistry, a common problem observed in this beginning of century is the pathologic tooth wear. This type of wear occurs when there is accentuated loss of tooth structure, which frequently results in aesthetic compromise of the anterior maxillary teeth. As a result of the societys awareness of the importance of health and aesthetics, the request for reparative aesthetic treatments in cases of pathologic tooth wear has increased. This aesthetic rehabilitation may be achieved either through indirect or direct treatments. Due to the advantages of the resin composites, the aim of the present paper is to show specifically the direct approach throughout the use of a layering technique to simulate the optical characteristics of the tooth structure. Hence with the evolution of the adhesive systems associated with improving in the chemical-mechanical-aesthetical charecterics of the resin composites, extensive restorative treatments as the direct reconstruction of the anterior guidance in cases of pathologic tooth wear are now feasible.