ABSTRACT
AIM: This was to study the prevalence of molar incisor hypomineralisation (MIH) among school children residing in a fluorosis endemic area in Tamilnadu (Salem, India). METHODS: A target sample of 5000 children of age ranging between 9 and 14 years, comprising 250 children from each of 20 blocks of Salem, participated in this study. The examination was completed in their respective schools by a calibrated examiner using EAPD criteria. RESULTS: Of 4989 children examined, 384 children had MIH. A prevalence of 7.3 %. The MIH found in girls was 8.9 % compared with 6.1 % in boys. Single-tooth involvement of MIH was seen predominantly in incisors (2.24 %), whereas with molars usually three teeth were involved (1.1 %). MIH with caries involvement was found in 51 % of the teeth. CONCLUSION: The prevalence of MIH in the endemic fluorosis district was found to be 7.3 %. A gradual increase in MIH was seen with age due to post enamel breakdown. Caries involvement was also seen in more than 50 % of the MIH-involved teeth. This prevalence study for molar incisor hypomineralisation (MIH) is rare in the literature, especially in a fluorosis endemic district in Tamilnadu.
Subject(s)
Dental Enamel Hypoplasia/epidemiology , Fluorosis, Dental/epidemiology , Adolescent , Age Factors , Child , Dental Caries/epidemiology , Endemic Diseases , Epidemiologic Studies , Female , Humans , Incisor/pathology , India/epidemiology , Male , Molar/pathology , Prevalence , Sex FactorsABSTRACT
This article discusses a case of an 8-year-old female child who presented with severe lower anterior crowding and congenitally missing lower second premolars. A conventional serial extraction procedure could not be performed due to the congenital absence of teeth. Instead, planned extraction of a few primary teeth was done to relieve the lower anterior crowding, the results of which were near satisfactory.
Subject(s)
Anodontia/therapy , Bicuspid/abnormalities , Malocclusion/therapy , Serial Extraction/methods , Child , Dental Arch/anatomy & histology , Female , Follow-Up Studies , Humans , Mandible , Odontometry/methods , Open Bite/therapy , Patient Care Planning , Tooth Movement Techniques/methods , Tooth, Deciduous/surgeryABSTRACT
This article highlights the use of two new design space regainers--the "lingual arch crossbow" and the "double-banded space regainer." The former may be used for distalizing a mesially migrated mandibular first premolar, if it erupts prior to the canine. The latter may be used in conventional cases of interdental space loss. They both contain assemblies that function through the action of NiTi open coil springs.
Subject(s)
Mesial Movement of Teeth/therapy , Orthodontic Appliance Design , Orthodontic Wires , Space Maintenance, Orthodontic/instrumentation , Tooth Movement Techniques/instrumentation , Child , Elasticity , Humans , Male , Nickel , TitaniumABSTRACT
The aim was to compare the vertex occlusal projection with the anterior maxillary occlusal projection in localizing the position of mesiodentes. Mesiodentes were observed in an 8-year-old boy with an anterior maxillary occlusal radiograph. A vertex occlusal radiograph was taken to compare it with the former in terms of mesiodentes localization with respect to the maxillary central incisors. The vertex occlusal radiograph provided greater details of the position and proximity of mesiodentes with respect to the long axis of maxillary central incisors in comparison to the anterior maxillary occlusal radiograph. Vertex occlusal radiography is an important diagnostic tool in diagnosing the presence, position, and proximity of mesiodentes with respect to the long axis of normally aligned maxillary central incisors. However, it is not recommended for routine use in a patient as its radiation dose is higher than conventional intraoral radiographic methods.
Subject(s)
Incisor/diagnostic imaging , Tooth, Supernumerary/diagnostic imaging , Tooth, Unerupted/diagnostic imaging , Child , Humans , Male , Maxilla/diagnostic imaging , Radiography, Dental/methodsABSTRACT
The aim of the report was to highlight the rarity of occurrence of bilaterally fused mandibular primary lateral incisors and canines by virtue of the number of such cases reported in literature; to identify congenital absence of successor teeth;and to evaluate their pulpal morphologies to understand the type of fusion. Clinical observation along with an orthopantomograph and periapical radiographs were used to arrive at a diagnosis. The pulpal morphologies varied in each of the fused teeth although both were fusions of the Complete type. There was congenital absence of the permanent mandibular lateral incisors, bilaterally. It was a case of bilateral fusion of mandibular primary lateral incisors and canines of the Complete type with congenitally absent mandibular permanent lateral incisors. Only 13 such cases have been previously reported in literature.
