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1.
Int. j. med. surg. sci. (Print) ; 8(2): 1-10, jun. 2021. tab
Article in Spanish | LILACS | ID: biblio-1284432

ABSTRACT

El orden y cronología del brote dentario temporal es una expresión del crecimiento del niño e influye en su posterior desarrollo dental y maxilofacial. Tener un conocimiento sobre la edad promedio de brote de cada diente es útil para establecer un diagnóstico, prevención y tratamiento de maloclusiones por lo cual el objetivo de esta investigación es caracterizar el patrón de brote de la dentición temporal en niños y niñas del municipio Cerro, La Habana, Cuba. Para ello se diseñó un estudio observacional descriptivo en 370 niños de ambos sexos entre 0 a 36 meses de edad, el estudio se desarrolló entre septiembre de 2017 a enero de 2020. Se estudiaron las variables: edad, sexo, diente, hemiarcada y cronología del brote dentario. Se realizaron distribuciones de frecuencia a todas las variables en estudio y se presentan los resultados en tablas estadísticas. Se utilizó la prueba t-Student para verificar las diferencias significativas. Los resultados principales obtenidos fueron que los dientes de maxilares brotaron antes que los mandibulares, a excepción de los incisivos centrales y el incisivo lateral inferior izquierdo. A pesar de que el brote dentario comenzó primero en individuos de sexo masculino en ambas arcadas (5,86 meses en el maxilar, ± 0,92; y en la mandíbula 4,92 meses ± 1,09), el período de tiempo de brote fue algo más rápido en el sexo femenino (19,83 meses en el maxilar y 21,64 meses en la mandíbula ) y los masculinos (20,26 meses y 22,16 meses), pero sin diferencias significativas (p<0,05). Se concluye que el patrón de brote fue similar al descrito en la literatura, excepto por discreto adelanto para los incisivos centrales y retraso en segundos molares temporales


The order and chronology of the temporary tooth eruption is an expression of the child's growth and influences his later dental development. Having knowledge about the average age of emergence of each tooth is useful to establish a diagnosis, prevention and treatment of malocclusions, for which the objective of this research is to characterize the pattern of emergence of primary dentition in children in Cerro district, Havana, Cuba. For this, a descriptive observational study was designed in 370 children of both sexes between 0 and 36 months of age, in said clinic during September / 2017 to January / 2020. The variables were studied: age, sex, tooth, hemiarcade and chronology of the dental outbreak. Frequency distributions were made to all the variables under study and the results are presented in statistical tables. The t-Student test was used to verify significant differences. The main results obtained were that the teeth of the maxillary arch erupted before those of the mandibular, except for the central incisors and the lower left lateral incisor. Although the fact that the dental flare began first in males in both arches (5,86 months in the maxilla, ± 0,92; and in the mandible 4,92 months ± 1,09), the time period of outbreak was somewhat faster in females (19,83 months in the maxilla and 21,64 months in the mandible) and males (20,26 months and 22,16 months), but without significant differences (p <0, 05). It is concluded that the eruption pattern was similar to that described in the literature, except for slight advancement for the central incisors and delay in second primary molars


Subject(s)
Humans , Male , Female , Infant, Newborn , Infant , Child, Preschool , Tooth, Deciduous/growth & development , Time Factors , Prospective Studies , Sex Distribution , Age Distribution , Cuba , Dentition
2.
J. appl. oral sci ; 29: e20201005, 2021. tab, graf
Article in English | LILACS | ID: biblio-1286918

ABSTRACT

Abstract Background Malocclusions are highly prevalent in childhood and adolescence, being considered a public health problem worldwide, in addition to be considered an important predictor in the tongue position and speech disorders. Objective Evaluate the association of malocclusions with tongue position and speech distortion in mixed-dentition schoolchildren from the south of Brazil. Methodology This cross-sectional study was performed using a database of an epidemiological survey realized in the southern of Brazil, in 2015, for evaluating the dental and myofunctional condition of the mixed-dentition from 7-13 years' schoolchildren. The outcome variables were tongue position and speech distortion, evaluated by a trained and calibrated examiner. Characteristics regarding sociodemographic and oral health measures (Angle's classification of the malocclusion, overjet, overbite, posterior crossbite and respiratory mode) were also assessed. Poisson regression models with adjusted robust variance were used to evaluate the association among predictors variables in the outcomes. Results are presented as prevalence ratio (PR) and 95% confidence interval (95% CI). Results A total of 547 children were evaluated. Schoolchildren who presented anterior open bite (PR 2.36 95%CI 1.59-3.49) and having oral/oral-nasal breathing (RP 2.51 95%CI 1.70-3.71) are more likely to have altered position of the tongue. Both deep bite and being male represent protection factors for the abnormal tongue position. Regarding speech distortion, deep overbite presents a protective relationship to speech distortion (PR 0.41; 95%CI 0.24-0.71), whereas schoolchildren with posterior crossbite were more likely to present this problem (PR 1.77; 95%CI 1.09-2.88). Conclusion Anterior open bite and posterior crossbite were the malocclusions related to speech distortion and/or altered tongue position. Oral/oral-nasal breathing was also related to myofunctional changes. Deep bite malocclusion was a protective factor for both speech problems and altered tongue position when compared to a normal overbite.


Subject(s)
Humans , Male , Child , Adolescent , Dentition , Malocclusion/epidemiology , Speech , Speech Disorders , Tongue , Prevalence , Cross-Sectional Studies
3.
Rev. odontopediatr. latinoam ; 11(1): 219150, 2021. ilus, tab
Article in Spanish | LILACS, COLNAL | ID: biblio-1147636

ABSTRACT

Objetivos: La presente investigación tuvo como objetivo establecer la correlación entre la presencia de maloclusiones a nivel vertical con el índice del paladar y con la altura palatina. Materiales y Métodos: Estudio de tipo transversal. La población de estudio fue conformada por 134 modelos de yeso con dentición mixta, 81 mujeres y 53 hombres, seleccionados por conveniencia y obtenidos desde el 2014 hasta el 2018 del área de clínica de odontopediatría y ortodoncia en la Escuela Nacional de Estudios Superiores Unidad León. La muestra de estudio fue dividida en 3 categorías según la oclusión; mordida abierta (37), mordida profunda (32) y normoclusión (65). Se realizaron mediciones del ancho intermolar y altura del paladar con el uso de un calibrador digital, posteriormente se obtuvo el índice del paladar y se correlacionó con los parámetros expuestos por Korkhaus mediante la prueba estadística de Spearman. Resultados: La prueba estadística de Spearman refleja que no hay correlación entre la magnitud de los valores del índice del paladar propuestos por Korkhaus con la presencia de maloclusiones a nivel vertical. De igual manera las pruebas estadísticas indican que no existe correlación notable entre la altura del paladar y la oclusión en relación vertical. Conclusiones: El resultado obtenido al usar el índice del paladar no fue capaz de corresponder a los parámetros propuestos por Korkhaus como normales, posiblemente al ser usado durante la etapa de la dentición mixta pues durante este periodo suceden cambios constantes relacionados al crecimiento.


Objetivos: Os objetivos a presente investigação buscou valor uma correlação entre a presença de más oclusões em nível vertical com o índice do palato e com a altura palatina. Materiais e Métodos: Estudo do tipo transversal. A população do estudo foi composta por 134 modelos de gesso com dentição mista, 81 mulheres e 53 homens, selecionados por conveniência e obtidos de 2014 a 2018 na área de Odontopediatria e Ortodontia na Escola Nacional de Ensino Superior Unidade de León. A amostra do estudo foi dividida em 3 categorias de acordo com a oclusão; mordida aberta (37), mordida profunda (32) e normoclusão (65). A medida da largura intermolar e da altura do palato foi feita com o uso de um paquímetro digital, o índice de palato foi posteriormente obtido e relacionado aos parâmetros expostos por Korkhaus por meio do teste estatístico de Spearman. Resultados: O teste estatístico de Spearman mostra que não há correlação entre a magnitude dos valores do índice de palato proposta por Korkhaus e a presença de más oclusões verticais. Da mesma forma, os testes estatísticos indicam que não há correlação notável entre a altura do palato e a oclusão na relação vertical. Conclusões: O resultado obtido com o uso do índice de palato não foi capaz de corresponder aos parâmetros propostos por Korkhaus como normais, possivelmente quando usado durante o estágio de dentição mista, porque durante este período há mudanças constantes relacionadas ao crescimento


Purpose: The aim of the present study is to assess the relation between vertical malocclusions with palatal index and palatal height. Materials and Methods: Transversal study. The sample consisted in 134 stone models within mixed dentition, 81 females and 53 males, they were convenience selected and obtained from the pediatric and orthodontic dentistry medical center at the National School for Superior Studies Unit León since 2014 to 2018. The stone models were divided into three categories according to their kind of occlusion: open bite (37), deep bite (32) and normal bite (65). Palatal width and height were measure by using a digital caliper. Subsequently the palatal index was obtained and it was related with the parameters exposed by Korkhaus using the Spearman statistical test. Results: The Spearman statistical test indicated there is no a clearly relationship between palatal index values exposed by Korkhaus with the presence of vertical malocclusions and in the same way there is no a relationship between palatal height and vertical malocclusions.Conclusions: The result obtained by using the palatal index was no able to indicate an agreement with Korkhaus parameters. Probably this disagreement was due to the constant changes that occur during the period of the mixed dentition.


Subject(s)
Humans , Male , Female , Open Bite , Dentition, Mixed , Measurements, Methods and Theories , Dentition , Malocclusion
4.
Pesqui. bras. odontopediatria clín. integr ; 21(supl.1): e0021, 2021. tab, graf
Article in English | LILACS, BBO | ID: biblio-1351222

ABSTRACT

ABSTRACT Objective To perform a morphological evaluation concerning the extent of interproximal enamel reduction (IPR) with different manual instruments in different types of teeth and a qualitative analysis of enamel surface characteristics at the contact point before and after IPR. Material and Methods 40 freshly extracted, caries-free, and intact human teeth were used for the study (20 bicuspids and 20 incisors) and performed IPR just on the mesial surface. The morphological variation of contact point was evaluated by superimposed the stl file, obtained thanks to an extraoral scanner, at T0 and T1 for each tooth. Two types of strip were used, Intensiv Manual Ortho Strips Coarse/Medium and Steelcarbo Horico Strips. Teeth were then cut lengthwise, removed the most apical root portion and the mesial and distal halves were gilded and observed at different magnifications. Results The morphological variation following stripping mainly depends on the extent of the stripping, while the diameter, the type of strip and the shape of the tooth itself do not appear to be relevant. The 500X and 1500X magnifications allowed to appreciate better the characteristics of the surface of the stripped enamel and the differences with the intact enamel. All teeth treated, independently from the kind of strip used, shows deep marks and grooves in the direction of stripping. In both cases, the enamel appears significantly damaged at great magnifications. Conclusion Stripping always and inevitably leads to a change in the shape of the contact point and is directly correlated to the amount of stripping performed. The use of polishing after the removal of enamel interproximal is necessary in all cases.


Subject(s)
Male , Female , Orthodontics/instrumentation , In Vitro Techniques , Dental Arch , Dentition , Malocclusion/etiology , Regression Analysis , Longitudinal Studies , Dental Enamel , Evaluation Studies as Topic , Italy/epidemiology
5.
Article in English | WPRIM | ID: wpr-786590

ABSTRACT

With the evolution of the computer-aided design/computer-aided manufacturing (CAD/CAM) technology, the intraoral scanners are playing an increasingly important role, as they are the first step towards a completely digital workflow. The CAD/CAM double scanning technique has been used to transfer the information from provisional restorations to definitive restorations. In this case, a 67-year-old male with esthetically compromised anterior teeth, generalized severe attrition of teeth, and reduced vertical dimension was treated with full mouth rehabilitation including a re-establishment of the lost vertical dimension of occlusion assisted by the crown lengthening procedure. The provisional restorations were fabricated using an intraoral scanner and the CAD/CAM double scanning technique. After the period of adaption, the definitive monolithic zirconia restorations were delivered. The CAD/CAM double scanning technique successfully transferred the occlusal and morphological characteristics, obtained from the provisional restorations, to the definitive restorations.


Subject(s)
Aged , Crown Lengthening , Dentition , Humans , Male , Mouth Rehabilitation , Mouth , Tooth , Tooth Wear , Vertical Dimension
6.
Article in English | LILACS, BBO | ID: biblio-1135559

ABSTRACT

Abstract Objective: To compare the status of oral hygiene and dentition in patients with congenital hemorrhagic disorders with their age-matched healthy counterparts. Also, the prevalence of fear of dentists/ dental treatment among these patients was assessed. Material and Methods: This study was performed on children and adults with von Willebrand disease (vWD), hemophilia (A or B), and healthy subjects. Oral health and dentition status was assessed using the simplified oral hygiene index (OHI-S), plaque index, and the decayed, missing, filled teeth (dmft/DMFT) index. One-way ANOVA test was employed to compare the oral hygiene and dentition status of subjects in the three groups. A p-value of <0.05 was considered statistically significant. Results: The DMFT score did not vary significantly between the groups (p>0.05). Higher OHI-S scores and a poor oral hygiene status was observed more in the hemophilia group than the vWD group and healthy controls. A total of 27.3% of the subjects in the vWD group, 18.2% of subjects in the hemophilia group, and no subjects in the healthy group had a fear of dentists or dental treatment. Conclusion: Subjects with vWD had a higher number of carious teeth when compared to the other groups. Poor oral hygiene status was observed in subjects with hemophilia.


Subject(s)
Humans , Male , Female , Child, Preschool , Child , Adult , Oral Hygiene , von Willebrand Diseases , Oral Health , Dentition , Hemophilia A , Oral Hygiene Index , Cross-Sectional Studies/methods , Analysis of Variance , Dentists , India
7.
Rev. cienc. cuidad ; 17(1): 43-56, 2020.
Article in Spanish | LILACS, BDENF, COLNAL | ID: biblio-1051724

ABSTRACT

Introducción: El abordaje de la salud bucal es prioridad para la Organización Mundial de la Salud (OMS) y un factor importante para el desempeño de la enfermería en el entorno escolar. Objetivo: Establecer los factores relacionados con el deterioro de la dentición en escolares de 6 a 12 años. Materiales y Método: Estudio descriptivo, prospectivo, de corte transversal. Muestra total de 197 estudiantes de primaria. Muestreo no probabilístico por conveniencia, con edad entre 6 y 12 años en dos instituciones públicas de Bucaramanga, durante el año 2016. A partir de la revisión de la literatura se elaboró un cuestionario que se utilizó para la recolección de la información, teniendo en cuenta 18 factores relacionados y 15 características definitorias del diagnóstico de la enfermería mencionado y validado. Resultados: Los factores relacionados con mayor proporción fueron: nivel socioeconómico bajo 74,3% (145), sensibilidad al frío 68,5% (135), higiene oral ineficaz 56,3% (111) y predisposición genética 51% (100). Las características definitorias más frecuentes fueron: mala oclusión, mala alineación dental (98,5%), caries en la corona (70,8%), dientes desgastados, erosión del esmalte, desgaste dental (68,5%), decoloración del esmalte dental (53,8%) y exceso de placa (50,3%). Conclusión: El rol de la enfermería escolar debe identificar los factores relacionados con el diagnóstico que tiene que ver con el "deterioro de la dentición" para orientar las intervenciones en niños escolares, y así mejorar la salud bucal como parte del autocuidado. La evaluación del estado de la salud bucal es un componente prioritario en la valoración de la enfermería en los escolares. Las características definitorias del diagnóstico más frecuentes en la población infantil evaluada, fueron la mala oclusión y la caries.


Introduction: Oral health is a priority for the World Health Organization (WHO) and an important factor for the nursing performance in the school environment. Objective: Establish the factors related to tooth decay in students that are in the age range between 6 to 12 years old. Materials and methods: cross-sectional prospective and descriptive study. The total sample was of 197 students from elementary school between the ages of 6 to 12 years old, applying convenience sampling, in two public institutions in Bucaramanga, during the year of 2016. Parting from the literature review, a validated questionnaire was made for the recollection of information with the 18 related factors and 15 characteristics defining the mentioned nursing diagnosis. Results: The related factors with greater proportion were: low socioeconomic level 74.3% (145), cold sensitivity 68.5% (135), inefficient oral hygiene 56.3% (111) and genetic predisposition 51% (100). The more frequent defining characteristics were; malocclusion of teeth (98.5%), crown cavities (70.8%), wore down teeth and erosion (68.5%), tooth discoloration (53.8%) and plaque excess (50.3%). Conclusion: The role of school nursing must identify the factors related to the diagnosis of "tooth decay" to orientate the intervention in students, which encourage dental health as part of their selfcare. The evaluation of dental health is a priority component in the nursing evaluation for students. The defining characteristics of the diagnosis, more frequent in the school student population, were malocclusion and cavities.


Introdução: A abordagem da saúde bucal é uma prioridade para a Organização Mundial de Saúde (OMS) e um fator importante para o desempenho da enfermagem no ambiente escolar. Objetivo: Estabelecer os fatores relacionados à deterioração da dentição em crianças de 6 a 12 anos. Materiais e Métodos: Estudo descritivo, prospectivo, transversal. Amostra total de 197 estudantes primários, amostragem não probabilística por conveniência com idade entre 6 e 12 anos em duas instituições públicas de Bucaramanga, durante 2016. Foi elaborado um questionário para coleta de dados com os 18 fatores relacionados e 15 características definidoras do diagnóstico de enfermagem e da literatura revisada. Resultados: Os fatores relacionados encontrados em maior proporção foram: nível socioeconômico inferior a 74,3% (145), sensibilidade ao frio 68,5% (135), higiene oral ineficaz 56,3% (111) e predisposição genética 51% (100); e as características definidoras mais frequentes foram; má oclusão, mau alinhamento dentário (98,5%); cárie na coroa (70,8%), desgaste dos dentes, erosão do esmalte, desgaste dentário (68,5%), descoloração do esmalte dentário (53,8%) e excesso de placa (50,3%). Conclusão: O papel da escola de enfermagem deve identificar os fatores relacionados ao diagnóstico "deterioração da dentição" para orientar intervenções em escolares que promovam a saúde bucal como parte do autocuidado. A avaliação do estado de saúde bucal é um componente prioritário na avaliação de enfermagem em escolares. As características definidoras do diagnóstico de deterioração de enfermagem da dentição mais freqüentemente encontradas na população infantil avaliada foram a má oclusão e a cárie.


Subject(s)
Nursing Diagnosis , Dentition , School Nursing , Nursing Assessment
8.
Article in Korean | WPRIM | ID: wpr-719550

ABSTRACT

Generalized severely worn dentition causes occlusal disharmony, esthetic problems, and temporomandibular joint disorders. In order to solve these problems, it is necessary to make a precise analysis of vertical dimension and treatment plans considering it. This case report demonstrates the complete mouth rehabilitation of a 58-year-old male patient with a lot of worn teeth by increasing vertical dimension. Provisional restorations were cemented and after 4 months of evaluation for patient's compliance, permanent prostheses were fabricated. With these treatments, functionally and esthetically satisfactory results were obtained.


Subject(s)
Compliance , Dentition , Humans , Male , Middle Aged , Mouth Rehabilitation , Mouth , Prostheses and Implants , Temporomandibular Joint Disorders , Tooth , Vertical Dimension
9.
Article in Korean | WPRIM | ID: wpr-719256

ABSTRACT

Excessive wear causes many complications when untreated, so that accurate diagnosis, analysis and predictive treatment plan should be made, and through evaluation of vertical dimension and stepwise treatment, a stable inter-arch relationship can be set. For the long-term success of implant treatment, ideal position and angle of implant is important, and its importance increases especially in multiple implant cases. Therefore, thorough diagnosis and planning, accurate surgery and prosthodontic procedures are significant. In this case, a 68-year-old male patient with a loss of vertical dimension due to multiple tooth loss and overall tooth wear was planned with systematic analyses from the pre-treatment stage to rehabilitate vertical dimension. Full-mouth fixed rehabilitation with computer tomography guided implant surgery was performed to the newly set vertical dimension and attained satisfactory outcomes both functionally and esthetically.


Subject(s)
Aged , Dentition , Diagnosis , Humans , Male , Rehabilitation , Tooth Loss , Tooth Wear , Tooth , Vertical Dimension
10.
Article in Korean | WPRIM | ID: wpr-742102

ABSTRACT

The anterior guidance is one of the important factors in prosthodontic treatment of anterior teeth. The lingual surface shape of anterior restorations is so critical that small errors of treatment procedure can cause discomfort of the patient and disharmony of the dentition. If the anterior restorations are achieved harmonious anterior guidance through the fabrication and adjustment of provisional restorations, it is important to accurately reproduce the lingual surface shape of provisional restorations as the final prosthesis. In this case report, it was used the modified Dahl principle and copy-milled technique of computer-aided design/computer-aided manufacturing (CAD/CAM) system for systematic diagnosis and treatment. Therefore, we tried to reconstruct the restoration shape more precisely by setting the appropriate anterior guidance and superimposing the digital image of the abutment teeth and the provisional restorations. Thus, by promoting functional and esthetic recovery, this case report demonstrates satisfying results to both the patients and dentist.


Subject(s)
Dentists , Dentition , Diagnosis , Humans , Prostheses and Implants , Tooth
11.
Article in Korean | WPRIM | ID: wpr-742098

ABSTRACT

It is necessary to set the correct occlusal plane and to distribute the occlusal force uniformly considering the state of the opposing dentition during the prosthetic of the single edentulous patient with severe alveolar bone resorption. Implant supported overdenture is superior to complete denture in terms of maintenance and stability, and limited implants are used in fully edentulous patients with high alveolar bone resorption. Telescopic attachments using a newly introduced material based on poly-aryl-ether-ketone (PAEK) have the advantages of typical telescopic copping, excellent abrasion resistance, and are lighter and more economical than conventional implant overdentures. In this case, we restored maxillary arch with a implant retained overdenture using the telescopic attachment made of Pekkton and the mandible was restored with fixed implant prosthesis. Through these procedures esthetic aspects and functional outcomes were satisfactorily achieved.


Subject(s)
Bite Force , Bone Resorption , Dental Occlusion , Dentition , Denture, Complete , Denture, Overlay , Humans , Mandible , Maxilla , Prostheses and Implants
12.
Article in English | WPRIM | ID: wpr-742082

ABSTRACT

PURPOSE: This study was conducted to investigate patterns of adjacent tooth displacement in the posterior implant with interproximal contact loss (ICL) by 3-D digital superimposition method. MATERIALS AND METHODS: Posterior partially edentulous patients, restored with implant fixed partial prostheses before 2011 and suffered from food impaction of ICL between 2009 and 2011, were included. Two dental casts, at the time of delivery and at the time of food impaction in a same patient, was converted into 3-D digital models through scanning and superimposition was performed to assess chronologic changes of the dentition. Directions of tooth displacement were evaluated and the amount of ICL was calculated. Correlations between the amount of ICL and elapsed time, or between the amount of ICL and age after function, were assessed at a significance level of P.05). CONCLUSION: Natural teeth showed various directional movements to result in occlusal change in the arch. The 3-D superimposition of chronologic digital models was a helpful method to analyze the changes of dentition and individual tooth displacement adjacent to implant restoration.


Subject(s)
Dental Implants , Dentition , Humans , Male , Maxilla , Methods , Prostheses and Implants , Retrospective Studies , Tooth
13.
Article in English | WPRIM | ID: wpr-741999

ABSTRACT

Mucopolysaccharidosis (MPS) is an inherited metabolic disorder caused by a deficiency in enzymes that participate in the degradation of glycosaminoglycans (GAGs) such as heparin sulfate and dermatan sulfate. Left untreated, patients show progressive mental and physical deterioration due to deposition of GAGs in organs. Death often occurs due to cardiac or respiratory failure before patients reach their early twenties. MPS has several oral and dental manifestations. An enlarged head, short neck, and open mouth associated with a large tongue are major characteristics of MPS patients. Dental complications can be severe, including unerupted dentition, dentigerous cyst-like follicles, malocclusions, condylar defects, and gingival hyperplasia. A 21-year-old female patient with MPS was described in this article, with special emphasis on oral manifestations and dental treatment.


Subject(s)
Dental Pulp Cavity , Dentition , Dermatan Sulfate , Female , Gingival Hyperplasia , Glycosaminoglycans , Head , Heparin , Humans , Malocclusion , Mouth , Mucopolysaccharidoses , Neck , Oral Manifestations , Respiratory Insufficiency , Root Canal Therapy , Tongue , Young Adult
14.
Article in Korean | WPRIM | ID: wpr-787385

ABSTRACT

The purpose of this study was to examine dental complications and to evaluate the effects of initial treatment age, treatment modalities, and treatment duration on the disorder after radiation and chemotherapy in pediatric cancer patients.For 93 children with clinical and radiographic data, the number of teeth, the morphology of teeth, the shape of the roots, and development status of the dentition were evaluated.Dental development disorders were found in 61.3% of the children. The mostly found abnormality was root deformity with the prevalence of 31.2%. In children submitted to the therapy before the age of 6, the number of missing teeth (p = 0.029) and microdontia (p = 0.003) were greater compared to the children who started to receive the treatment after the age of 6. The combination of radiation and chemotherapy showed significantly greater incidences of missing teeth (p = 0.030), microdontia (p = 0.046), and root deformity (p = 0.009) when compared with the sole application of chemotherapy. When the children were submitted to anticancer therapy for 18 months or longer duration, greater number of missing teeth (p = 0.032), microdontia (p = 0.011), root deformity (p = 0.025), and total number of teeth affected (p = 0.036) were observed compared with duration less than 18 months.The number of dental abnormalities increased when the children were treated at earlier ages, with combination of radiation and chemotherapy, and for longer period of time.


Subject(s)
Child , Congenital Abnormalities , Dentition , Drug Therapy , Humans , Incidence , Prevalence , Tooth
15.
Article in Korean | WPRIM | ID: wpr-764431

ABSTRACT

PURPOSE: Previous studies related with occlusal contact area were limited that interocclusal thickness level or the method of measurement has not been accurate in measuring. The purpose of this study was to investigate the relation between head posture and occlusal contact area using photo occlusion analysis. MATERIALS AND METHODS: 54 subjects with complete dentition (44 men, 10 women / 23 to 33 years of age) were included. To identify the relationship between head posture and occlusal contact area, subjects took interocclusal record in maximal intercuspal position with three different positions(supine position (0°) / inclined position (45°) / upright position (90°)) on the dental unit chair. Occlusal contact area was analyzed using photo occlusion analysis. Statistical analyses were performed with SPSS ver.25.0 at 95% confidence interval. RESULTS: Head posture has no significant effect on the changes of occlusal contact area (P > 0.05). CONCLUSION: When interocclusal relation is stable, head posture does not change a interocclusal record because head posture has no significant effect on occlusal contact area. Analysis of occlusal contact area using photo occlsion analysis device is useful due to its material property and simplicity.


Subject(s)
Dentition , Female , Head , Humans , Male , Methods , Posture
16.
Article in Chinese | WPRIM | ID: wpr-772695

ABSTRACT

OBJECTIVE@#We aim to examine teenagers with varying vertical facial skeletal types with near-normal occlusion. We further aim to identify and study mandibular morphology and dentition characteristics to establish normal ranges and variations for future clinical reference.@*METHODS@#According to the results of the case studies, 42 adolescents with near-normal occlusion were divided into three groups, namely, low- (7 cases), average- (23 cases) and high-angle (12 cases) groups. We used Invivo 5 software for Digital Imaging and Communications in Medicine (DICOM) data to calculate the cant of occlusal plane, axis corner of L6, ∠L1/MP, ∠L6/MP, Balkwill angle and Bonwill triangle of each group.@*RESULTS@#Markedly, the finding shows that the cant of occlusal plane and axis corner of L6 in the low-angle group were smaller than those of the other two groups. In the average-angle group, ∠L1/MP was larger than that of the high-angle group. Lastly, in the high-angle group, ∠L6/MP was smaller than those of the two other groups. On the one hand, these differences were considered statistically significant (P0.05).@*CONCLUSIONS@#In the low-angle group, the parallelisation of the occlusal plane tends to be more obvious compared with the two other groups. In the coronal section of the low-angle group, the axis of the mandibular first molar is up-right, whereas it is distally tilted in the sagittal section of the high-angle group. Furthermore, a number of differences are noted in the adult groups. Factors, such as aging and development in the craniofacial region, lead to changes in functional occlusion.


Subject(s)
Adolescent , Cephalometry , Dental Occlusion , Dentition , Humans , Mandible , Tooth
17.
Article in English | WPRIM | ID: wpr-758944

ABSTRACT

The purpose of this study was to develop effective dental hygiene chews for cats based on the anatomical features of the dentition and patterns of chewing motion. All cats were volunteered for dental prophylaxis followed by dental impressions using yellow stone and alginate under general anesthesia. Twenty parameters related to dentition were defined in order to compare dental impressions using digital caliper. For the chewing motion study, patterns of chewing motion were identified based on recordings made with a digital camera. Ten cats (4 domestic shorthairs, 2 Russian blues, 1 American shorthair, 1 Persian, 1 Turkish Angora, and 1 Devon Rex) were recruited for the study. The parameters related to teeth and oral size were similar among the studied cats. Chewing motion can be described as more of a guillotine-like motion rather than a crushing motion, with cats chewing 3–7 times before swallowing. The chewing pattern of cats involves shearing for a short period of time followed by immediate swallowing. Therefore, the overall size of the dental hygiene chew could be determined based on the measurement of the oral size for inducing chewing. The surface details of the dental hygiene chew could be designed for prevention and removal of dental calculus and plaque in cats considering the anatomical teeth parameters. Dental hygiene chews customized for cats considering the different anatomical features of their teeth might be effective for oral care.


Subject(s)
Anesthesia, General , Animals , Cats , Deglutition , Dental Calculus , Dental Prophylaxis , Dentition , Gingiva , Mastication , Oral Hygiene , Periodontal Diseases , Tooth
18.
Article in Korean | WPRIM | ID: wpr-761447

ABSTRACT

The distance between the natural teeth and the implants is an important factor in preserving the periodontal tissues and esthetics. And abnormal positional displacement and tilting of the teeth during restorative procedure may require intentional root canal treatment and may affect masticatory function. This report is to present a successful full mouth rehabilitation of a patient with uneven dentition and collapsed occlusion using orthodontic and implant treatment. The patient had no symptoms or discomfort of temporomandibular joint disorder such as pain or sound. The orthodontic treatment was continued until implant provisional prosthesis delivery. And the vertical height of occlusion was elevated 2mm on anterior basis for anterior teeth protection and esthetics. After the orthodontic treatment, the implant abutments and natural teeth were finally restored with porcelain-fused-to-metal crowns and bridges. Satisfactory function and esthetic outcomes are observed after 6months of follow up.


Subject(s)
Crowns , Dental Pulp Cavity , Dentition , Esthetics , Follow-Up Studies , Humans , Mouth Rehabilitation , Mouth , Prostheses and Implants , Temporomandibular Joint Disorders , Tooth
19.
Article in Korean | WPRIM | ID: wpr-761445

ABSTRACT

As digital dentistry technology is being developed, it is being used in various ways. This case covers how digital dentistry technology is being applied on the treatment of patients with loss of vertical dimension due to worn dentition and multiple loss of teeth. The loss of vertical dimension was carefully assessed and recovered, and implants were placed with surgical guides, designed considering the final restoration. The movement of the mandibular was measured with the electronic instrument for recording mandibular movement. Wax-up process was done with Naturgemäße Aufwachs-Technik (N.A.T.) and Natural functional reconstruction (N.F.R.). It was scanned, and the provisional restoration was fabricated using Computer-Aided-Design/Computer-Aided-Manufacturing (CAD/CAM) technology, and the adjustment process was done at the clinic to meet with the satisfaction both functionally and esthetically, and then, using double scanning and CAD/CAM technology, it was carried out as a final restoration. As a result, the patient obtained satisfying results, utilizing the benefits of digital dentistry technology and traditional methods.


Subject(s)
Dentistry , Dentition , Humans , Mouth Rehabilitation , Mouth , Tooth Loss , Tooth , Vertical Dimension
20.
Article in Korean | WPRIM | ID: wpr-761440

ABSTRACT

This study reported the treatment of a patient with excessive worn dentition and limited maxillo-mandibular space for restoration, utilizing the computer-aided design and computer-aided manufacturing (CAD/CAM) technology. After the thorough examination of the patient's occlusal vertical dimension (OVD), full mouth rehabilitation was planned with increase of the OVD. The patient was satisfied with the provisional restorations establishing the increased OVD. The horizontal and vertical data of the patient's jaw relation that the provisional restorations contained were transferred to the definitive metal ceramic fixed prostheses by double scanning and three-dimensional printing. After the fixed restorations were cemented to the abutments, electronic surveying and three-dimensional printing were used to fabricate metal frameworks for the patient's removable partial dentures. The mandibular definitive removable prostheses were delivered to the patient's mouth and the full mouth rehabilitation procedures were completed. The digital technologies used for this case produced fixed and removable restorations satisfactory in masticatory, phonetic and aesthetic functions to both the patient and the dental clinician.


Subject(s)
Ceramics , Computer-Aided Design , Dentition , Denture, Partial, Removable , Humans , Jaw , Mouth Rehabilitation , Mouth , Printing, Three-Dimensional , Prostheses and Implants , Tooth Wear , Vertical Dimension
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