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1.
Acta Odontol Latinoam ; 33(2): 90-97, 2020 Sep 01.
Artículo en Inglés | MEDLINE | ID: mdl-32920610

RESUMEN

The aim of this study was to determine the caries situation of three-year-old preschool children residing in low socioeconomic status districts in Lima, Peru. The study is a crosssectional analysis of the caries situation of suburban areas of Lima. A stratified sampling procedure by geographical distribution, considering healthcare centers with a motherand- child health clinic and surrounding preschools as factors, identified 45 randomly selected preschools, of which 17 accepted to participate. Children from 3-year-old classrooms were examined by two independent calibrated dentists using the Caries Assessment Spectrum and Treatment (CAST) instrument at their premises using artificial light, sterile examination mirrors and gauze for drying each tooth before evaluation. ANOVA and the Tamhane method were used to analyze the data. 308 children, mean age 3.4 years (min: 3 years; max: 3 years, 7 months), were examined. The sample prevalence of enamel and dentine carious lesions (CAST code 3-7) was 91.2% while the prevalence of dentine carious lesions (CAST code 4-7) was 58.8%. The mean number of teeth with cavities that had reached the pulp and those that had an abscess or fistula were 2.0% and 0.5% respectively. The majority of enamel and dentine carious lesions were observed in molars. The CAST severity score was 7.0. Mean examination time was 57 seconds. The burden of dental caries of the children at this young age was high.


Asunto(s)
Caries Dental/epidemiología , Diente Molar/patología , Preescolar , Estudios Transversales , Caries Dental/clasificación , Esmalte Dental/patología , Femenino , Humanos , Masculino , Perú/epidemiología , Prevalencia , Reproducibilidad de los Resultados , Factores Socioeconómicos , Población Suburbana
2.
West Afr J Med ; 37(3): 253-259, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32476119

RESUMEN

BACKGROUND: Stainless steel crown (SSC) restoration is one of the restorative treatment options in the management of carious primary molars. The Hall technique is a biologic method of managing carious primary teeth by sealing in the caries with SSCs without the routine local anaesthesia and tooth preparations. The objectives of this study was to compare the treatment assessments of the conventional stainless steel crown restoration with Hall technique using subjects' discomfort during treatments and parents' treatment perception, treatment acceptability and satisfaction with the treatment. METHODS: The study was a comparative analytical study involving the placement of 25 SSC restorations using the conventional method and 25 SSC restorations using the Hall technique in 25 subjects aged 3-8 years with a pair or pairs of unrestored enamel or dentinal carious primary molars matched for tooth type, dental arch and extent of caries. Discomfort during the placements of the SSCs was assessed by the subjects while treatment perception, acceptability and satisfaction were assessed by the parents with the use of questionnaires. RESULTS: There was statistically significant difference (p-value 0.00001) between the conventional method and the Hall technique for the discomfort outcomes. There was no statistically significant difference for treatment perception (p=0.73), acceptability (0.72) and satisfaction (0.60). CONCLUSION: The Hall Technique compared favourably well with the conventional method in treatment perception, acceptability and satisfaction but it gave higher level of discomfort in some of the subjects. The Hall Technique appears to be a good method for managing dental caries in primary molar teeth especially in a resource challenged environment where electricity and access to care are contending issues.


Asunto(s)
Coronas , Atención Dental para Niños/métodos , Caries Dental/terapia , Restauración Dental Permanente/métodos , Cementos de Resina/uso terapéutico , Acero Inoxidable , Niño , Preescolar , Aleaciones Dentales , Humanos , Diente Molar/patología , Diente Primario/patología , Resultado del Tratamiento
3.
Cient. dent. (Ed. impr.) ; 17(1): 19-26, ene.-abr. 2020. ilus, graf
Artículo en Español | IBECS | ID: ibc-189745

RESUMEN

La pérdida ósea vertical en los sectores posteriores maxilares es un hecho frecuente tras la extracción dental. En muchas ocasiones para rehabilitar estas zonas podemos emplear técnicas de regeneración u optar por un abordaje más conservador con implantes cortos. En el presente caso clínico mostramos un caso rehabilitado bilateralmente con dos técnicas diferentes: elevación de seno y la inserción de implantes cortos, con un seguimiento de ocho años donde ambas técnicas han logrado resultados igualmente predecibles


Vertical bone loss in the posterior maxillary sectors is a frequent occurrence after tooth extraction. These areas can often be rehabilitated using regeneration techniques or by opting for a more conservative approach with short implants. The present clinical case shows bilateral rehabilitation with two different techniques: sinus lift and the insertion of short implants, with a follow-up of 8 years where both techniques have achieved equally predictable results


Asunto(s)
Humanos , Femenino , Persona de Mediana Edad , Atrofia , Maxilar/cirugía , Elevación del Piso del Seno Maxilar/métodos , Implantes Dentales , Maxilar/patología , Diente Molar/patología , Radiografía Panorámica
4.
Sci Rep ; 10(1): 2578, 2020 02 13.
Artículo en Inglés | MEDLINE | ID: mdl-32055001

RESUMEN

The high prevalence and heavy socio-economic burden for caries of first permanent molars (FPMs) make the prevention of this disease a major public health goal. Current guidelines recommend a preference of fissure sealant (FS) over fluoride varnish (FV) based on two recent systematic reviews. However, evidences of these two studies are weak because of scarce data and some limitations. Besides, an up-to-date large scale randomized controlled trial (RCT) reported commensurate effectiveness of these two techniques. Thus, in order to more accurately compare the clinical efficacy between FS and FV on caries prevention for FPMs, we carried out this systematic review and meta-analysis. A total of 8 RCTs involving 3289 participants and 6878 FPMs fulfilled the inclusion criteria. Our meta-analysis for the first time showed that there was no statistical difference on caries incidence or occlusal DMFS increment between sealant group and fluoride varnish group at 2~3 years' follow-up. In that sense, biannual applications of FV or FS may be equally effective on caries prevention for FPMs. These results do not support routine recommendation of FS over FV, thus shedding light on current conceptions. Our findings endow clinicians with a window to reconsider the choice between these two techniques.


Asunto(s)
Caries Dental/tratamiento farmacológico , Fluoruros Tópicos/uso terapéutico , Diente Molar/efectos de los fármacos , Selladores de Fosas y Fisuras/uso terapéutico , Caries Dental/patología , Caries Dental/prevención & control , Guías como Asunto , Humanos , Diente Molar/patología
5.
Artículo en Inglés | MEDLINE | ID: mdl-32098396

RESUMEN

The aim of this study was to evaluate the risk factors associated with the occurrence of caries in permanent teeth (PT) and in the permanent first molar (PFM) seven years after their eruption. Children born in 2005 who were enrolled in a Community Dental Program were included. A total of 278 children were enrolled. Evaluated risk factors were parental caries experience, educational level of the mother, routine medications, systemic diseases, dietary habits, toothbrushing frequency, existence of molar incisor hypomineralization (MIH) in the PT, and caries in the temporary teeth (TT). Associations between independent variables and the DMF-T (decayed, missing, and filled teeth in PT) and DMF-M (DMF in PFM) indices, only considering cavitated and non-cavitated carious lesions or cavitated carious lesions as outcomes, were evaluated by Poisson regression with robust variance analysis. A cariogenic diet (sweets and soft drinks), toothbrushing frequency of <1 a day, a presence of df-t (decayed and filled temporary teeth) score of >0, low educational level of the mother, and existence of MIH were associated with high DMF-T or DMF-M values (p < 0.05). We can conclude that the intake of sweets and soft drinks, toothbrushing frequency, the presence of caries in TT, and MIH in PT were the best predictors of the occurrence of caries in PT and PFM.


Asunto(s)
Caries Dental , Diente Molar , Adolescente , Niño , Índice CPO , Caries Dental/epidemiología , Dentición Permanente , Dieta , Femenino , Humanos , Diente Molar/patología , Estudios Retrospectivos , Factores de Riesgo , Cepillado Dental
6.
Int J Oral Sci ; 12(1): 7, 2020 02 21.
Artículo en Inglés | MEDLINE | ID: mdl-32080164

RESUMEN

Primary molar ankylosis with infraocclusion can retard dental arch development and cause dental asymmetry. Despite its widespread prevalence, little is known about its molecular etiology and pathogenesis. To address this, RNA sequencing was used to generate transcriptomes of furcal bone from infraoccluded (n = 7) and non-infraoccluded (n = 9) primary second molars, all without succeeding biscuspids. Of the 18 529 expressed genes, 432 (2.3%) genes were differentially expressed between the two groups (false discovery rate < 0.05). Hierarchical clustering and principal component analysis showed clear separation in gene expression between infraoccluded and non-infraoccluded samples. Pathway analyses indicated that molar ankylosis is associated with the expression of genes consistent with the cellular inflammatory response and epithelial cell turnover. Independent validation using six expressed genes by immunohistochemical analysis demonstrated that the corresponding proteins are strongly expressed in the developing molar tooth germ, in particular the dental follicle and inner enamel epithelium. The descendants of these structures include the periodontal ligament, cementum, bone and epithelial rests of Malassez; tissues that are central to the ankylotic process. We therefore propose that ankylosis involves an increased inflammatory response associated with disruptions to the developmental remnants of the dental follicle and epithelial rests of Malassez.


Asunto(s)
Perfilación de la Expresión Génica , Ligamento Periodontal , Anquilosis del Diente/genética , Anquilosis del Diente/patología , Adolescente , Niño , Cemento Dental/patología , Femenino , Humanos , Masculino , Maloclusión/etiología , Maloclusión/genética , Maloclusión/patología , Diente Molar/patología , Análisis de Secuencia de ARN , Técnicas de Movimiento Dental , Diente Primario/patología
7.
Vet J ; 255: 105421, 2020 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-31982081

RESUMEN

Fissures on the occlusal surface of equine cheek teeth are commonly encountered during oral examination. Generally, their presence is considered abnormal but their aetiopathogenesis and clinical impact on pulp disease is still undetermined. The aims of this research were to study the extent of occlusal cheek teeth fissures using high-resolution X-ray computed tomography (µCT) imaging and their histological characteristics. Twenty-seven teeth (of 15 horses) were scanned using µCT imaging to analyse fissure extent. Histological examination of a subset of teeth (n=7) was performed. Forty-three type 1 fissures (35 type 1a, eight type 1b) were identified. The mean length of the fissure of type 1a and type 1b on the occlusal surface was 3.47+/-1.60mm and 13.64+/-7.40mm, respectively. Their mean depth was 13.22+/-10.76mm and 7.42+/-6.42mm, respectively. Potential risk factors associated with fissure depth were identified using a multivariable mixed model The location of the fissure and Triadan number were significantly associated with fissure depth. Fissures could be identified on histological sections with the presence of organic material inside the fissure, microorganisms in the continuation of the fissure extending into the dentinal tubules and the presence of reactionary dentine. This study suggests that fissures can provide a pathway for microorganisms to enter the dentinal tubules, potentially resulting in local pulpal inflammation. It appears that in healthy teeth, vital odontoblasts react by producing reactionary (tertiary) dentin, which lacks patent tubules and thus provides a proper seal.


Asunto(s)
Fisuras Dentales/veterinaria , Enfermedades de los Caballos/patología , Diente Molar/patología , Animales , Fisuras Dentales/diagnóstico por imagen , Fisuras Dentales/epidemiología , Fisuras Dentales/microbiología , Dentina/patología , Enfermedades de los Caballos/epidemiología , Caballos , Tomografía Computarizada por Rayos X/veterinaria
8.
Lasers Med Sci ; 35(5): 1185-1191, 2020 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-31970563

RESUMEN

The aim of this controlled randomized double-blinded clinical trial was to evaluate the use of a CO2 laser with or without topical application of acidulated fluorides in the prevention of dental caries in partially erupted first permanent molars. We selected 61 healthy children at high risk of caries, all between 6 and 8 (7.1 ± 0.8) years of age and with 4 partially erupted first permanent molars. A CO2 laser device emitting at 10.6 µm was used (0.5 W, 0.05 mJ per pulse, 10 kHz). Each first molar in an individual was randomly assigned to one treatment: (L) CO2 laser (0.066 J/cm2); (FL) 1.23% acidulated fluoride gel and CO2 laser (0.066 J/cm2); (V) 5% fluoride varnish, or (S) sealant (control). Patients were followed-up at 3, 6, 12, and 18 months after treatment, through direct visual examination and by an operator blinded to the treatments (kappa ≥ 0.70). The International Caries Detection and Assessment System (ICDAS-II) index was used to assess the soundness of tooth structure or the presence of white spot lesions, cavitated enamel, and/or dentin lesions. The Yildiz Visual Index was used to evaluate sealant retention. Results were evaluated using Kaplan-Meier survival analysis, and the hazard ratio of the treatments was estimated using shared frailty models with a gamma distribution, which considered the patient as a cluster. There were no significant differences among treatments compared to sealants. After 18 months, the use of a CO2 laser with or without acidulated fluorides was shown to be effective in preventing caries on the occlusal surface of partially erupted permanent first molars in children at high risk for caries.


Asunto(s)
Caries Dental/prevención & control , Láseres de Gas/uso terapéutico , Diente Molar/efectos de la radiación , Erupción Dental/efectos de la radiación , Niño , Caries Dental/epidemiología , Caries Dental/patología , Femenino , Estudios de Seguimiento , Humanos , Incidencia , Masculino , Diente Molar/patología , Selladores de Fosas y Fisuras/uso terapéutico , Modelos de Riesgos Proporcionales , Resultado del Tratamiento
9.
Clin Oral Investig ; 24(3): 1287-1297, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-31312969

RESUMEN

OBJECTIVES: Hypomineralised second primary molars (HSPM) are due to idiopathic hypomineralisation that affects from 1- to 4-s primary molars, and its aetiology remains unclear. Our objective was to systematically review studies in which the investigators had studied the association between HSPM and drug use during pregnancy and the first year of life. MATERIALS AND METHODS: A systematic search for publications until July 2018 was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) statement. No restrictions were placed on year of publication. The PECO Question was as follows: P, children exposed to drugs during pregnancy and the first year of life; E, drugs to which mothers, during pregnancy and their offspring were exposed; C, control groups from studies with the same characteristics not exposed to drugs during pregnancy and the first year of life; and O, relationship between drug exposure during pregnancy and the first year of life and HSPM. Two reviewers extracted the data and assessed the risk of bias using the Newcastle-Ottawa Scale criteria. RESULTS: We initially identified 986 articles, or which seven were selected for review: two case-control studies, one cross-sectional studies and four cohort studies. Four studies reported data on drug consumption during pregnancy and four investigated drug use during the first year of life and the occurrence of enamel defects in primary dentition. CONCLUSIONS: There is no clear evidence that the use of drugs during pregnancy and during the first year of life is associated with HSPM. Further well-designed prospective studies are needed. CLINICAL RELEVANCE: Determining the etiological factors related to the development of HSPM would help to establish preventive protocols in patients at potential risk. As HSPM is predictive of molar incisor hypomineralisation (MIH), the application of preventive protocols would avoid complications in both the primary and permanent dentition.


Asunto(s)
Hipoplasia del Esmalte Dental/etiología , Exposición Materna/efectos adversos , Diente Molar/patología , Preparaciones Farmacéuticas , Diente Primario/patología , Niño , Estudios Transversales , Femenino , Humanos , Embarazo , Prevalencia , Estudios Prospectivos
10.
Medicine (Baltimore) ; 98(48): e18115, 2019 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-31770237

RESUMEN

INTRODUCTION: The aim of this report is to present a case of an apically involved tooth with successful regeneration by only applying enamel matrix derivative. The root of the tooth was planed and the defect area was well debrided using various instruments, including curettes and an ultrasonic scaler, and the root surface of the tooth and the defect area were loaded with enamel matrix derivative. PATIENT CONCERNS: A 32-year-old man visited the clinic due to a referral for the evaluation of his mandibular left first molar. DIAGNOSIS: The clinical and radiographic assessment displayed the loss of the periodontium around the tested tooth with apical involvement of the mesial root. Bleeding upon probing was noted at the mandibular first molar, with the deepest periodontal probing depth of 15 mm. INTERVENTIONS: A nonsurgical approach was firstly performed on the tooth, and the deepest probing depth was reduced to 12 mm. After re-evaluation, elevation of a full-thickness flap was done, the root of the tooth was planed, and the defect area was well debrided using various instruments, including curettes and an ultrasonic scaler. The defect area on the mandibular left first molar was grafted with enamel matrix derivative. OUTCOMES: The 7-month postoperative clinical and radiographic evaluation showed healthy gingiva and an increase in radiopacity. The final 1-year and 9-month postoperative evaluation showed that regeneration of bony defect was well maintained up to the final evaluation with reduction of probing depth. CONCLUSION: In conclusion, a case of apically involved tooth can be treated only with enamel matrix derivative after meticulous debridement with curettes and an ultrasonic scaler.


Asunto(s)
Productos Biológicos/uso terapéutico , Matriz Ósea/trasplante , Esmalte Dental/trasplante , Ápice del Diente/cirugía , Enfermedades Dentales/cirugía , Adulto , Raspado Dental/métodos , Humanos , Masculino , Mandíbula/cirugía , Diente Molar/patología , Diente Molar/cirugía , Periodoncio/patología , Periodoncio/cirugía , Ápice del Diente/patología , Enfermedades Dentales/patología
11.
Niger J Clin Pract ; 22(11): 1576-1582, 2019 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-31719280

RESUMEN

Aims: To evaluate the diagnostic abilities of near-infrared light transillumination (using the DIAGNOcam) and bitewing radiographs in detecting cavitated proximal carious lesions in primary molars. Subjects and Methods: The study was a cross-sectional analytical, clinical study. The proximal surfaces of primary molars of healthy 5- to 8-year-old children were radiographically screened for the presence of carious lesions in the enamel or outer third of dentin (D1). Two trained and calibrated examiners evaluated the depth of caries in bitewing radiographs and DIAGNOcam images and then verified the presence of cavitation by direct visual examination using the "International Caries Detection and Assessment System" after temporary tooth separation. Results: A total of 236 proximal lesions were included in the study. Most of the clinically cavitated lesions (51.9%) were D1 radiographically and in outer dentin lesions (scores 3 and 4) by the DIAGNOcam (37% and 48.1%, respectively). Although DIAGNOcam showed higher sensitivity (0.852) compared to the radiographs (0.519), it showed slightly less specificity (0.569) compared to the radiographs (0.579). However, DIAGNOcam showed higher value of the area under the curve (AUC = 0.722; P < 0.001) compared to the radiographic method (AUC = 0.561; P = 0.308). Conclusions: The DIAGNOcam showed higher sensitivity and better accuracy than bitewing radiographs in diagnosing cavitated proximal lesions in primary molars and can be generally considered as an alternative to radiographs to detect cavitation without the hazards of ionizing radiation in children.


Asunto(s)
Caries Dental/diagnóstico , Microrradiografía/instrumentación , Microrradiografía/métodos , Radiografía de Mordida Lateral/métodos , Radiografía Dental/métodos , Diente Primario/diagnóstico por imagen , Transiluminación , Niño , Preescolar , Estudios Transversales , Caries Dental/patología , Esmalte Dental/diagnóstico por imagen , Esmalte Dental/patología , Dentina/diagnóstico por imagen , Dentina/patología , Femenino , Humanos , Masculino , Diente Molar/patología , Radiografía Dental Digital , Reproducibilidad de los Resultados , Sensibilidad y Especificidad
12.
Medicine (Baltimore) ; 98(40): e17356, 2019 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-31577730

RESUMEN

Molar-incisor malformation (MIM) is a recently defined dental abnormality of molar root and incisors, and introduced as one of the causes of periapical and periodontal abscess. The purpose of this study was to investigate the clinical and radiological features of MIM, with special emphasis on various medical history. A total of 38 patients with MIM were included in this study. Radiographic features and clinical data, including medical history, chief complaint, associated complications, treatment, and prognosis, were retrospectively investigated. On radiographs, the affected molars showed short, slender, underdeveloped roots and constricted pulp chambers. All affected incisors and canines exhibited dilacerated short roots, wedge-shaped defect on the cervical part of the crown. Complications included periodontal bone loss (52.6%), endodontic lesion (50.0%), and endodontic-periodontal lesion (28.9%). The medical histories of the patients with MIM indicate that almost all (94.7%) were hospitalized due to problems during the neonatal period. MIM may cause various dental problems, such as periapical and periodontal abscess and early loss of the affected teeth. The early diagnosis of MIM on radiographs and appropriate treatment will contribute to a favorable prognosis, especially for young and adolescent patients.


Asunto(s)
Incisivo/diagnóstico por imagen , Incisivo/patología , Diente Molar/diagnóstico por imagen , Diente Molar/patología , Anomalías Dentarias/diagnóstico por imagen , Anomalías Dentarias/patología , Adolescente , Pérdida de Hueso Alveolar/etiología , Niño , Preescolar , Cavidad Pulpar/diagnóstico por imagen , Cavidad Pulpar/patología , Femenino , Humanos , Masculino , Radiografía Dental , Estudios Retrospectivos , Anomalías Dentarias/complicaciones , Anomalías Dentarias/diagnóstico , Raíz del Diente/diagnóstico por imagen , Raíz del Diente/patología , Adulto Joven
13.
Am J Orthod Dentofacial Orthop ; 156(3): 355-364, 2019 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-31474265

RESUMEN

INTRODUCTION: The aim of this work was to analyze data of patients with failed or delayed eruption of first and second permanent molars, to assess the effectiveness of the treatment methods used. METHODS: Epidemiologic and clinical data of 125 patients (mean age 14.08 ± 4.04 years) with 197 affected molars (30 first and 167 second molars) were retrospectively analyzed. The treatment outcome was known in 161 molars after patient drop-out (20 patients with 36 molars). The cases were categorized into 8 groups according to the choice of treatment: orthodontic uprighting, surgical-orthodontic uprighting, surgical uprighting, surgical repositioning, surgical exposure, first or second molar extraction, third molar extraction, or removal of pathologic conditions. RESULTS: The overall treatment outcome was positive in 141 molars (87.6%). It was positive in all cases treated with orthodontic uprighting (7 molars), surgical exposure (10 molars), surgical uprighting (38 molars), and surgical repositioning (8 molars), but it was significantly lower for surgical-orthodontic uprighting (34/48 molars, 70.8%). The positive outcome was significantly lower for inclusion (52/68 molars, 76.5%) than for early-diagnosed condition (11/11 molars, 100%) and retention (78/82 molars, 95.1%), and for total bone crown coverage (21/28 molars, 75.0%) than for osteomucosal or mucosal crown coverage (120/133 molars, 90.2%). CONCLUSIONS: This study demonstrates that an early diagnosis results in a better outcome regardless of the treatment used, with the number of cases with a positive outcome being higher in younger patients.


Asunto(s)
Diente Molar/patología , Anomalías Dentarias , Erupción Dental , Técnicas de Movimiento Dental/métodos , Diente Impactado/terapia , Adolescente , Adulto , Niño , Preescolar , Femenino , Humanos , Italia , Modelos Logísticos , Masculino , Diente Molar/cirugía , Tercer Molar/cirugía , Estudios Retrospectivos , Diente Impactado/diagnóstico , Diente Impactado/cirugía , Resultado del Tratamiento , Adulto Joven
14.
J Ayub Med Coll Abbottabad ; 31(3): 418-421, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31535519

RESUMEN

BACKGROUND: This study was conducted to compare the adaptation of resin-based sealants with that of Resin modified glass ionome-based sealants in various tooth fissure morphologies. METHODS: It was an in vitro experimental study done at the Dow University and NED University, Karachi, Pakistan. Ten extracted human molars were randomly assigned to two groups, (n=5) each. Fissure sealant material (Resin based sealant or resin modified glass ionomer-based sealant) was applied on the occlusal surface of the tooth according to manufacturer's recommendations. Specimens were thermocycled and then sectioned into three longitudinal parts in the bucco- lingual direction. Specimens were examined using scanning electron microscope for the adaptation of the sealant in the occlusal fissure. Mann-Whitney -U test and Kruskall-Wallis test were applied to compare the adaptability scores of sealant materials in the tooth fissure. Level of significance was kept at 0.05. RESULTS: There were no significant differences in the adaptability scores among U-shaped (p-value=0.35), V-shaped (p-value=0.89), IK-shaped (p-value=0.52), I-shaped (p-value- =0.41) and Y-shaped (p-value=1.00) fissure patterns. Similarly, there were no significant differences observed between the resin-based sealant (p-value=0.95) versus RMGIC based sealant (p-value=0.63) for the adaptability scores in various tooth fissure morphologies. CONCLUSIONS: No significant difference was found between resin-based sealants and resin modified glass ionomerbased sealants for the adaptation in various tooth fissure patterns.


Asunto(s)
Fisuras Dentales/patología , Cementos de Ionómero Vitreo , Diente Molar , Selladores de Fosas y Fisuras , Cementos de Ionómero Vitreo/química , Humanos , Diente Molar/efectos de los fármacos , Diente Molar/patología , Pakistán
15.
Braz Oral Res ; 33: e048, 2019 Aug 15.
Artículo en Inglés | MEDLINE | ID: mdl-31432924

RESUMEN

This cross-sectional study aimed to assess the prevalence of molar incisor hypomineralization (MIH) and its relationship with the number of primary teeth with developmental defects of enamel (DDE). A representative population-based sample of 731 schoolchildren was randomly selected from the public school system in Curitiba, Brazil. Schoolchildren aged 8 years with fully erupted permanent first molars and incisors were eligible for the study. MIH and DDE were classified by four calibrated examiners (kappa > 0.75) according to EAPD criteria and to the FDI-modified DDE index. Clinical data were collected in a school environment. Socioeconomic information was collected through a self-administered semistructured questionnaire applied to the children's caregivers. Statistical analyses were carried out using Poisson multiple regression with robust variance (α = 0.05). MIH prevalence was 12.1% (95%CI: 10-15), and opacities were the most prevalent defect. Socioeconomic factors were not associated with MIH. Children with demarcated opacity in primary teeth presented a higher prevalence of MIH than those without DDE in primary teeth. In the multiple analysis, the increase of one primary tooth affected by demarcated opacity increased the prevalence of MIH by 33% (PR = 1.33, 95%CI: 1.15-1.53, p < 0.001). Asian children had a higher prevalence of MIH (PR = 2.91, 95%CI: 1.08-8.09 p = 0.035) than did Caucasian children.Conclusion: Based on these findings, the prevalence of MIH in Curitiba was 12.1%. Demarcated opacity in primary teeth could be considered a predictor of MIH.


Asunto(s)
Hipoplasia del Esmalte Dental/epidemiología , Diente Primario , Brasil/epidemiología , Niño , Estudios Transversales , Hipoplasia del Esmalte Dental/patología , Femenino , Humanos , Incisivo/patología , Masculino , Diente Molar/patología , Prevalencia , Análisis de Regresión , Factores de Riesgo , Autoinforme , Índice de Severidad de la Enfermedad , Factores Socioeconómicos , Diente Primario/patología
16.
Am J Orthod Dentofacial Orthop ; 156(2): 248-256.e2, 2019 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-31375235

RESUMEN

INTRODUCTION: The treatment options for adults with increased overbite are limited to dentoalveolar changes that camouflage the condition. Because of high relapse tendency, defining the problem area is important when creating a treatment plan. This study aimed to evaluate dentoskeletal morphology in skeletal Class I and II anomalies associated with Angle Class I, Class II Division 1 (Class II/1), and Class II Division 2 (Class II/2) malocclusions with increased overbite compared with normal occlusion. METHODS: Pretreatment cephalograms of 306 patients (131 men, 175 women; overall ages 18-45 years) were evaluated. Four groups were constructed. Three groups had increased overbite (>4.5 mm): group 1 (n = 96) skeletal Class I (ANB = 0.5°-4°), group 2 (n = 85) skeletal Class II (ANB >4.5°) with Class II/1; and group 3 (n = 79) skeletal Class II with Class II/2 malocclusion. Group 4 as a control (n = 46) skeletal Class I normal overbite. Dental and skeletal characteristics of the groups were compared by sex. For statistical evaluations, analysis of variance followed by Tukey post hoc, Mann-Whitney U, and Kruskall-Wallis tests were used. Additionally correlation coefficients between overbite and skeletal/dental parameters were calculated. RESULTS: Between sexes, with regard to skeletal parameters, the men had greater values in millimetric measurements, and the women had higher SN/GoGn values. Maxillary/mandibular molar heights and the mandibular incisor heights were higher in men. In group 1, decreased lower anterior facial height (LAFH), retrusive mandibular incisors, and increased interincisal degree were determined. The maxillary molars were intrusive, whereas the vertical position of the mandibular molars and incisors in both jaws were normal. In group 2, retrognathic mandible, increased LAFH and mandibular plane angle, extrusive maxillary/mandibular incisors, protrusive mandibular incisors, and decreased interincisal degree were found. In group 3, decreased LAFH, increased interincisal degree, and retrusive incisors in both jaws were determined. There were significant negative correlations between SN/GoGN, palatal plane, and overbite in group 2 and between ANS-SN and overbite in group 3, and positive correlation between interinsical angle and overbite in all increased overbite groups. CONCLUSIONS: Dental morphology seems to be the main factor of increased overbite. Differences between groups were related primarily to inclinations and vertical positions of the incisors, rather than molar positions.


Asunto(s)
Maloclusión de Angle Clase II/patología , Maloclusión de Angle Clase I/patología , Sobremordida/epidemiología , Sobremordida/patología , Adolescente , Adulto , Análisis de Varianza , Puntos Anatómicos de Referencia , Cefalometría , Femenino , Humanos , Incisivo/patología , Masculino , Maloclusión de Angle Clase III/patología , Mandíbula/patología , Maxilar/patología , Persona de Mediana Edad , Diente Molar/patología , Retrognatismo/patología , Factores Sexuales , Turquia , Adulto Joven
17.
BMJ Case Rep ; 12(7)2019 Jul 23.
Artículo en Inglés | MEDLINE | ID: mdl-31340944

RESUMEN

A 6-year-old child with an episodic history of ulcerations over buccal mucosa was found to have severe inflammation on the palatal aspect of permanent first molars with grade 2 mobility bilaterally. Radiographical features were suggestive of bone loss around permanent molars extending to the distal aspect of the deciduous first molars. The clinical and radiographical findings were indicative of periodontal degeneration without any apparent cause visible intraorally. Further biopsy was done from the rashes present on the malar prominences, which showed nodular aggregates of atypical cells in superficial dermis. These large histiocytic cells with vesicular nuclei and nuclear grooves were immunopositive for CD1a and S100, concluding the diagnosis of Langerhans cell histiocytosis. For treatment, patient was referred to Department of Haemato-oncology and chemotherapy was suggested as per protocol.


Asunto(s)
Histiocitosis de Células de Langerhans/patología , Histiocitosis de Células de Langerhans/terapia , Úlceras Bucales/patología , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Biopsia con Aguja , Niño , Terapia Combinada , Diagnóstico Diferencial , Estudios de Seguimiento , Histiocitosis de Células de Langerhans/diagnóstico , Humanos , Inmunohistoquímica , Masculino , Diente Molar/patología , Mucosa Bucal/patología , Úlceras Bucales/diagnóstico , Radioterapia Ayuvante , Medición de Riesgo , Odontalgia/diagnóstico , Odontalgia/patología , Resultado del Tratamiento
18.
J Dent ; 88: 103163, 2019 09.
Artículo en Inglés | MEDLINE | ID: mdl-31276747

RESUMEN

OBJECTIVES: Although there is some consensus that carious lesions in early stages (non-cavitated) could be treated using sealants, neither the type of materials nor their use in lesions with localized enamel breakdown (microcavitated) has been reported To compare the efficacy of resin or glass ionomer (GI) sealants in arresting microcavitated carious lesions (ICDAS 3) in first permanent molars. MATERIALS AND METHODS: A double-blinded randomized controlled clinical trial was conducted in 41 healthy 6 to 11-year-old children. At the baseline examination, each subject had at least one carious lesion classified as ICDAS 3 on the first permanent molar. One hundred fifty-one lesions were randomized into: Group 1: resin sealants (76 lesions) and Group 2: GI sealant (75 lesions). Carious lesion progression was assessed clinically and radiographically. Progression and retention failure were the outcomes used for group comparisons at p-value<0.05. RESULTS: After a two-year follow-up, only one lesion progressed to ICDAS 5, without statistically significant differences between the groups (χ2(1) = 0.90, p = 0.53). Radiographically, 100 lesions (98%) were arrested and 2 (2%) showed radiographic progression, without differences between groups (χ2(1) = 0.93, p = 0.93). At 2 years, complete retention was observed in 77% of the resin-based and in 83% of the GI sealants, without statistical differences between type of sealant (χ2(1) = 0.71, p = 0.48). The multilevel mixed model demonstrated that location and type of sealant did not affect retention rates (χ2(1) = 24,98, p < 0.001). CONCLUSION: Sealing ICDAS 3 carious lesions in permanent molars appears to be effective in arresting lesions after a two-year follow-up. Clinicaltrials.gov: RCTICDAS3/2015. CLINICAL SIGNIFICANCE: Minimally invasive approaches for carious lesion management have been promoted. Using sealants for the treatment of microcavitated lesions (ICDAS 3) appears predictable in the routine practice, without predilection for resin or glass ionomer materials. In addition to preserving tooth structure, this strategy reduces chair-time, dental fear and costs, and increases coverage to dental care.


Asunto(s)
Resinas Acrílicas/uso terapéutico , Caries Dental/prevención & control , Cementos de Ionómero Vitreo/uso terapéutico , Selladores de Fosas y Fisuras/uso terapéutico , Resinas Acrílicas/química , Niño , Resinas Compuestas/química , Resinas Compuestas/uso terapéutico , Método Doble Ciego , Cementos de Ionómero Vitreo/química , Humanos , Diente Molar/patología , Selladores de Fosas y Fisuras/química , Dióxido de Silicio
19.
Biomed Res Int ; 2019: 4934128, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31317031

RESUMEN

Introduction: With an increasing demand for orthodontic treatment for adult patients, orthodontic professionals are constantly seeking novel strategies and technologies that can accelerate tooth movement in order to shorten the treatment period. For instance, in recent years, the influences of different surgical techniques on orthodontic tooth movement in the ipsilateral side of surgery were intensively investigated. Here, we attempt to examine if corticotomy could also affect the rate of tooth movement in the contralateral side of the surgery by using a rodent model. Materials and Methods: 72 eight-week-old Sprague-Dawley rats were randomly divided into three groups as follows: the Control group (orthodontic treatment devices delivered only, no tooth movement), the orthodontic tooth movement (OTM) group (orthodontic treatment devices delivered and orthodontic treatment performed), and the Corticotomy + OTM group (remote corticotomy performed, orthodontic treatment devices delivered, followed by orthodontic treatment). The surgical procedure was conducted on the right side of the maxilla at the time of appliance placement and a force of 60 g was applied between the maxillary left first molar and maxillary incisors using nickel-titanium springs to stimulate OTM. The OTM distance and speed were tracked at 3, 7, 14, and 28 days post-surgery, followed by histological and immunohistochemical assessments. Results: In comparison with orthodontic treatment only, the contralateral corticotomy significantly accelerated OTM. Furthermore, animals undergoing corticotomy + OTM presented with a greater number of osteoclasts on the compression side, stronger staining of the osteogenic marker on the tension side, and higher expression of an inflammatory marker than the OTM group animals. Conclusion: Our current study demonstrates that remote corticotomy effectively accelerates alveolar bone remodeling and OTM. The study enriches our understanding of the regional acceleratory phenomenon (RAP) and offers an alternative strategy for accelerating OTM to shorten the orthodontic treatment period.


Asunto(s)
Remodelación Ósea/efectos de los fármacos , Resorción Ósea/cirugía , Incisivo/cirugía , Osteogénesis/efectos de los fármacos , Animales , Modelos Animales de Enfermedad , Humanos , Incisivo/crecimiento & desarrollo , Incisivo/patología , Maxilar/crecimiento & desarrollo , Maxilar/patología , Maxilar/cirugía , Diente Molar/crecimiento & desarrollo , Diente Molar/patología , Diente Molar/cirugía , Níquel/uso terapéutico , Alambres para Ortodoncia , Osteoclastos/metabolismo , Osteoclastos/patología , Ratas , Titanio/uso terapéutico , Técnicas de Movimiento Dental
20.
Acta Odontol Latinoam ; 32(1): 44-48, 2019 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-31206574

RESUMEN

Clinically, Molar-Incisor Hypomineralization (MIH) lesions are not distributed symmetrically, and their severity varies even within the same arcade. AIM: To estimate the frequency of asymmetries in hypomineralized lesions on permanent molars and incisors of children with MIH. METHODS: Three pediatric dentists, calibrated following the diagnostic criteria of Mathu-Muju and Wright (2006) (Kappa 0.87) identified presence and severity of opacities on molars and incisors of patients with MIH. Six pairs of teeth (permanent maxillary and mandibular first molars, central and lateral incisors) were evaluated in each patient. Degree of lesion severity (0-none, 1-mild, 2-moderate, 3-severe) was recorded for each tooth. For each pair containing any affected teeth, asymmetry of presence (one tooth in the pair with lesion and the other intact), asymmetry of severity (both teeth with lesions but with different degrees of severity) or symmetry of severity (both affected teeth with the same degree of severity) were evaluated. The recorded values were entered into a database to calculate percentages, 95% confidence intervals and Chi-Square test for comparisons. RESULTS: The sample consisted of475 of the 1032 pairs of teeth evaluated in the 172 patients included in the study, mean age 11±2.2 years, and 50% female. Asymmetry was found for 67.5% (63.1 - 71.7) of the pairs of the studied teeth. There was a significant relationship between asymmetries and symmetries (p=0.038). A total 50.1% of the pairs were asymmetrical for presence of opacities. Of these, 62.2% scored severity 1 (mild). Symmetry of severity was found for 32.5% of the lesions. Among the pairs of affected teeth, the most frequently observed degrees of lesion severity were mild and moderate, with the exception of lower molars, in which 49% had severe lesions. CONCLUSIONS: In this study, MIH lesions were asymmetrical both in presence and severity for all tooth types.


Asunto(s)
Hipoplasia del Esmalte Dental/epidemiología , Incisivo/patología , Maxilar/patología , Diente Molar/patología , Desmineralización Dental/epidemiología , Adolescente , Argentina/epidemiología , Niño , Hipoplasia del Esmalte Dental/clasificación , Femenino , Humanos , Masculino , Prevalencia , Índice de Severidad de la Enfermedad , Desmineralización Dental/clasificación
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