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At least 1,261 records · Page 70Linked to original sources
PubMed2006

[Simultaneous occlusal orthodontics during mandibular distraction osteogenesis].

OBJECTIVE: To study the significance and principle of simultaneous orthodontics during mandibular distraction osteogenesis. METHODS: Totally 11 patients simultaneously underwent occlusal orthodontic treatment for 3-4 months during mandibular distraction osteogenesis. Square-wire and elastic loops were adapted to perform the orthodontics by ways of more frequent adjustment of orthodontic device than routine method. RESULTS: All 11 patients with mandibular micronathia obtained the improved occlusion with their mandibular expected elongation, for instance, their open-bite and teeth displacement were partially corrected. CONCLUSION: Simultanous orthodontics with mandibular distraction osteogenesis may improve the malocclusion, decrease the orthodontic time, and lead the mandibular distraction direction.

Adolescent↗
PubMed2006

An update on present and future considerations of aligners.

This report reviews the orthodontic treatment of six different patients who received removable aligners. These cases include correction of deep overbite, open bite, mild-to-moderate crowding, large overjet, cases requiring premolar extractions, the presence of multiple restorations, and cases requiring periodontal-restorative treatments, the improved periodontal status with aligners compared to fixed appliances and the use in teenagers. This report demonstrates that a wide range of cases can be effectively treated, provided the cases are thoroughly reviewed at an early stage process using Invisalgn's ClinCheck software, which will show the specific details of all consecutive appliances prior to any treatment being started so as to determine the biologic and biochemical feasibility of treatment.

Adolescent↗
PubMed2006

[Orthodontics for mentally handicapped patients].

The mentally handicapped exhibit a 3 times higher incidence of malocclusions and related functional problems than the general population. In contrast there is little available literature relating to the orthodontic treatment of handicapped patients. Based on published articles on orthodontic treatment of disabled patients the following recommendations can be given. First of all for each patient a 'problem list' should be drawn up, based on the diagnosis. In this list the orthodontic problems are formulated. Additionally, the list makes clear who is responsible for providing services related to orthodontic care, such as oral hygiene and transportation of the patient to the orthodontist. When deciding whether or not orthodontic treatment should be administered to a patient with a mental handicap the same functional and aesthetic considerations as with any other orthodontic case must be taken into account. Furthermore, the severity of the handicap and possible associated psychosocial and medical limitations as well as the extent to which it will be possible to treat the patient have to be considered. Contraindications are a severe mental handicap, inability to remain still in the dental chair, insufficient co-operation of parents/carers, open bite resulting from abnormal oral function, and a mild malocclusion. The orthodontic treatment should aim for an acceptable result, and not for orthodontic perfection.

Dental Care for Persons with Disabilities↗
PubMed1991

[The Tip Edge technic. Is it an advance in orthodontic concepts?].

The originality of Tip Edge technique is due to the possibilities to take benefit both of the advantages of BEGG technique and Edgewise technique. With the differential anchorages, bite opening is more rapid and the correction of all the occlusal abnormalities is easy during stage I. During stage III the bracket Tip Edge with its original design permit a progressive torque, roots uprighting and an Edgewise finish.

Humans↗
PubMed1991

[A case report on the achondroplasia and its dental findings].

Achondroplasia is characterized by an undergrowth of arms and legs bones, low height and undergrowth of the Basis cranil. The name of this disease was called Chondrodystrohia foetalis before Parrot reported the name of this disease as Achondroplasia, distinguished from other similar diseases. We are reporting in this paper on an 11-year, 2-month-old girl with Achondroplasia. The dental findings as follows: 1) Open bite was observed for the front teeth. 2) The size, number, form and growth of the teeth were usual. 3) The tongue was a little bigger than usual. 4) According to X-ray cephalometric analysis, undergrowth of the Basis cranii and relative anterior cross-bite were visible.

Achondroplasia↗
PubMedDate not supplied

Well-baby dental examinations: a survey of preschool children's oral health.

Well-baby dental visits provide early prevention and detection of dental disease for the infant and preschool child. A survey of the dental records of 379 preschool children from the ages of 6 months to 4.5 years were reviewed from a population of military family dependents. The caries activity of this population was found to be 8.9%, with a dft of 0.25. Nursing caries was clinically definable in 5.3% of the children, accounting for 58.8% of all reported caries. Malocclusion occurred in 6.3%, with anterior open bite and posterior crossbite found most commonly. No soft tissue pathology was noted. Evidence of previous dental trauma to the maxillary incisors with crown discoloration was found in 2.9%. These early dental visits provide a pleasant introduction to dental oral health and prevention for both parents and children. Early dental examinations should focus the parent's attention on the child's future oral health and provide an understanding of the causes of nursing caries.

Child Health Services↗
PubMed1991

The effect of neuromuscular diseases on the development of dental and occlusal characteristics.

Fourteen patients suffering from primary muscular disease (myopathies), including seven with Duchenne's muscular dystrophy, were compared to 11 patients whose neuromuscular disorders were of neuropathic origin. Mesioclusion was observed only in the group with Duchenne's muscular dystrophy. Posterior crossbite, anterior open bite, mouth breathing, and large tongue were also more prevalent in the group with myopathies, especially the Duchenne's patients, than they were in the group with neurogenic disorders. The Duchenne's patients exhibited a statistically significant delay in dental emergence, unlike the patients with other myopathies and those with neurogenic disorders. Dentition and occlusion may be more affected in patients with myopathies, especially Duchenne's muscular dystrophy, than they are in patients with neurogenic disorders.

Adolescent↗
PubMed1991

Craniomandibular function in juvenile chronic arthritis. A clinical and radiographic study.

Craniomandibular function was studied in 70 subjects with juvenile chronic arthritis (JCA). The subjects represented the total group of children and adolescents with the diagnosis JCA in a Swedish county. At examination, the median age of the subjects was 11.9 years and the median duration of the disease was 2.6 years. The most important finding of the study was the high prevalence (41%) of radiographic signs of temporomandibular joint (TMJ) pathology. Few subjects showed the typical craniofacial abnormalities associated with JCA, like mandibular micrognathia, facial asymmetries and open bite. Subjective symptoms of dysfunction were almost absent in subjects younger than seven years but were reported by 56% of the older subjects. TMJ sounds and pain on jaw movements were the most frequent symptoms reported. At the clinical examination, TMJ crepitations and restricted horizontal jaw movements were noted in 26% and 32% respectively. The high prevalence of TMJ involvement found in this study underlines the importance that dentists become part of the medical team responsible for the treatment of children and adolescents with JCA.

Adolescent↗
PubMed1991

[Juvenile chronic arthritis. A clinical and radiographic study of the chewing apparatus].

The present investigation of a relatively large Danish sample of patients with Juvenile Chronic Arthritis (JCA) revealed high frequencies of symptoms from the masticatory apparatus. 63% of the patients had destructive changes in the region of the mandibular condyles caused by arthritis. In one third of these cases the destructions were severe. Three fourth of the patients with TMJ-affection showed bilateral affection, and one fourth had unilateral affection. TMJ-affection was positively correlated to the duration and the severity of the general disease at the time of examination. Fifty per cent of the patients with TMJ-affection had reduced mouth opening capacity and most of these patients were aware of the problem themselves. The frequency of other symptoms from the TMJ and the jaw musculature was relatively high in the patient group. However, there were no significant differences between these frequencies when the group with TMJ-affection was compared to the group without TMJ-affection except for mouth opening capacity. The patients with TMJ-affection had significantly higher frequencies of frontal and lateral open bite and midline devition when compared to the patients without TMJ-affection. Furthermore, the patients with TMJ-affection had a significantly higher frequency of crowding in the mandibular incisor region than the patients without TMJ-affection. Thus, the study showed that TMJ-affection is common among children with juvenile chronic arthritis, and that the TMJ-affection may result in both functional problems and malocclusion.

Arthritis, Juvenile↗
PubMed1990

[The functional regulators (FR III, FR IV)].

The Frankel III appliance is used in Angle Class III, maxillary deficiency cases. The vestibular and buccal shilts changes the sagittal relationship of the jaws in Class III cases by developing the upper jaw sagittally, vertically and transversally. After 7 months of FR III treatment of an 11 year old Class III patient, the molar relationship and anterior crossbite were corrected. As the SNA angle increased, the -2 degrees ANB an le changed to 2 degrees. As there were no transversal and sagittal development in lower jaw, the upper jaw expanded transversally and sagittally. Also the FR IV appliance is used in the treatment of open-bite and bimaxillary protrusion cases.

Activator Appliances↗
PubMed1990

[Modified Klammt apparatus for treatment of stomatognathic abnormalities in preschool children].

Klammt apparatus was modified adapting it for treatment of occlusal abnormalities in milk teeth. The resting and functional positions of the tongue were used for this aim through appropriate directing of its action in the apparatus for widening of anterior parts of dental arches. The usefulness of the modified apparatus in the treatment of stomatognathic system abnormalities was assessed in 90 preschool children with malocclusions of crossbite type, open bite, anterocclusion and posterocclusion. The control group comprised 90 preschool children with similar abnormalities treated with monoblock. The results were significantly better after treatment with the modified Klammt apparatus, the dental arches were rapidly widened, therapeutic effects were better, rehabilitation of the muscles was more complete. Using the modified Klammt apparatus the children could easily speak, and thus the apparatus could be used longer than monoblocks which had a positive effect on the final therapeutic results in these cases.

Child, Preschool↗
PubMed1990

[Prevalence of orthodontic anomalies, analysis and evaluation of dental health in three groups of pre-school children in Zadar].

A group of 301 children (146 males and 155 females) aged 3-6 years, from kindergartens in Zadar, on the island of Ugljan and in Zadar suburbs, Bibinje and Sukosan, were examined. The prevalence of orthodontic anomalies and caries in pre-school children with exclusively deciduous dentition was assessed. Results were recorded in WHO forms for oral health state and required treatment assessment, and then compared. The overall prevalence of orthodontic anomalies in the sample of pre-school children was 47.50%, most of them found in children from the city of Zadar (56.36%), followed by those from the island of Ugljan, and from Bibinje and Sukosan (47.86% and 33.78%, respectively). According to diagnosis, premature loss was the leading cause (13.28%), followed by open bite (12.62%), primary crowding (7.64%), cross bite (4.98%), trauma (2.65%), overbite (2.32%), diastema (1.99%), other anomalies (1.32%), and progeny complex (0.66%), with a higher incidence in boys than in girls (28.23% vs. 19.26%). The frequency of caries (KIO) in the total sample was 68.8%, caries index (KIZ) 22.4%, and mean caries index (KIP) 4.2%, with no substantial differences related to sex or place of residence. Intact deciduous dentition was observed in 78.25%, treated in 2.1% and untreated in 22.4% of the subjects. The percentage of intact teeth was higher in the maxilla (78.6% vs. 76.6%), whereas the percentage of treated teeth was higher in the mandible (2.8% vs. 1.32%). No interrelationship was found between the frequency of orthodontic anomalies and caries. Assessment of the treatment requirements revealed that 667 deciduous teeth needed treatment.

Child↗
PubMed1990

[The clinical study on occurrence of TMJ dysfunction in orthodontic patients].

Occlusal disharmony is considered to be the most significant factor of temporomandibular joint (TMJ) dysfunction, but the relationship between malocclusion and TMJ dysfunction has been unknown yet. The purpose of present study was to investigate the relationship between TMJ dysfunction and occlusal disharmony (eccentric occlusal contacts and functional shift of the mandible) in orthodontic patients. The subjects were 533 orthodontic patients, 209 males and 324 females, who were received at the Department of Orthodontics, School of Dentistry, Hokkaido University from April 1985 to March 1988. Their ages ranged from 8 to 38 years old. All were prior to orthodontic treatment. The results were as follows 1. The prevalence of TMJ dysfunction was 27.6%, 24.9% in males and 29.3% in females. The difference was insignificant between males and females. 2. The patients with TMJ dysfunction increased after 13-15 years old, corresponding to dental age IV A (Hellman's classification). 3. In patients with TMJ dysfunction, the highest frequency of symptom of TMJ dysfunction was joint sounds (77.6%), the second was pain (22.4%), the third was disturbance of mandibular movement (4.8%). The complication of those symptoms were compounded in 26.3% of the total patients. 4. The prevalence of TMJ dysfunction had no relation to specific malocclusion and maxillofacial morphologic characteristic. 5. Most patients with TMJ dysfunction had occlusal disharmony (95.9%). 6. Eccentric occlusal contacts were found most frequently in patients with open bite and functional shift of the mandible was found most frequently in patients with deep bite. From these findings, the prevalence of TMJ dysfunction was frequent in orthodontic patients, however the symptoms were objective and the patients were not aware of TMJ dysfunction. TMJ dysfunction had no relation to specific malocclusion but some kinds of occlusal disharmony were easy to occur in specific malocclusion and TMJ dysfunction was induced by those etiological factors.

Adolescent↗
PubMed1990

[A case of the Hallermann-Streiff syndrome].

The Hallermann-Streiff Syndrome has been characterized and established according to 7 positive and 5 negative signs, which were described by François. We encountered an 11 year, 5 months old boy who had 7 positive symptoms of this syndrome in our clinic. In this study, we reported on this typical patient focusing on his dental view. 1) Prolonged retention of the primary teeth which involved microdontia were noted. Congenitally missing teeth were also seen. 2) The occlusal relationship indicated open bite, and also the mandibular function was impaired. 3) The measurements of the length and width of the dental arch were smaller than that of a normal subject, and the dental arch of the maxilla was V-shaped. 4) According to X-ray cephalometric analysis, (a) the dental calculus and the alveolar bone absorption were very evident. (b) abnormal morphologic of the glenoid fossa, mandibulars condyle and the neck of mandibula were seen. These conditions were very evident on the left side. 5) The growth obstade of the maxilla and mandibla and the left shift of the mandible were found. 6) According to histological study, enamel hypoplasia was noted.

Child↗
PubMed1990

[Some aspects of third molars with regard to the development of malocclusions].

Although the orthodontist is constantly aware of the developing third molar and its possible effects on the dentition during and after orthodontic treatment, the relationship between the third molar and the development of malocclusion had not been resolved. To attempt to clarify some of the problems associated with the third molar, an analysis of the factor in fluencing on the dentition and denture frame was performed. In this study, twenty-one adult cases which had no prothodontic correction of the tooth shape and orthodontic treatment with at least three wisdom teeth were used for evaluation of the denture frame structure and occlusion. The case which impacted third molar (M3 impacted group) showed less than 25 degree mandibular plane angle (FH-MP) without exception, while the case which the third molar erupted (M3 erupted group) were able to divide into high angle (more than 30 degree of FH-MP) and low angle (less than 29 degree of FH-MP) groups. The M3 impacted with low angle group and M3 erupted with low angle group showed relatively normal occlusion and favorable denture frame structure, but M3 erupted with high angle group indicated that the denture frame composition was affected by posterior discrepancy especially the steepness of occlusal plane which might be the over eruption of posterior teeth. The M3 erupted with high angle group also included two cases of severe anterior open-bite with skeletal deformity. These findings suggest that the posterior discrepancy due to existence of third molars influence on the dento-facial-skeletal structure and development of malocclusions.

Adult↗
PubMed1990

[Root resorption of mandibular second molars by impacted third molars. A case report with some reviews].

A case is presented here in which mandibular third molars resorbed second molars bilaterally 4 years 9 months after orthodontic treatment was finished. The initial problem was open bite, which was treated by non-extraction followed by a period for observing the third molars. During that period, the mandibular third molars moved mesially to resorb the roots of the second molars. The injured second molars were, therefore, extracted and the third molars were uprighted. During adolescence, third molars are erupting. When the posterior space is not enough for the third molars, they often erupt buccally or lingually, or impact distally toward the second molars and cause root resorption. It is suggested that the third molars should be observed carefully till they erupt or are extracted.

Adolescent↗
PubMed1990

[Prevalence of malocclusions and demand for orthodontic treatment among students at a women's high school].

Prevalences of malocclusions were investigated in a sample of 3,520 girls recorded between 1984 and 1986 at a private high school. Also, proportions of students who had received and were under treatment were surveyed for 3,501 students in 1989. In addition, ratios of a number of those who were judged to reveal maxillary protrusion with respect to that of the whole sample examined were evaluated as a function of overjet. The results of the surveys are as follows. SURVEY I) A total prevalence of malocclusion was 57.9% in the Grade 7 (G7) and 56.4% in the Grade 10 (G10). Among malocclusions surveyed, maxillary protrusion was found in 8.1% of the G7 and in 7.8% of the G10. Deep overbite was determined in 7.9% of the G7 and in 7.6% of the G10, mandibular protrusion was found in 2.4% of the G7 and in 2.7% of the G10. Edge-to-edge incisor relationships were determined in 6.4% of the G7 and in 7.6% of the G10. Anterior open bite was found in 2.4% of the G7 and in 2.9% of the G10. Crowding was found in 37.3% of the G7 and in 33.9% of the G10. SURVEY II) Prevalence of students who had orthodontic treatment at the time of survey, was 6.4% in the G7, 7.0% in the G8, 6.0% in the G9, 6.0% in the G10, 5.4% in the G11, and 3.6% in the G12. Those who had had orthodontic treatment revealed proportions of 8.1% in the G7, 8.0% in the G8, 7.7% in the G9, 11.3% in the G10, 12.2% in the G11, and 13.7% in the G12 students. SURVEY III) A proportion of 73.5% of those who had overjets more than 6 mm were judged to have maxillary protrusion.

Adolescent↗