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Jaw and tooth abnormalities detected on panoramic radiographs in New Zealand children aged 10-15 years.
Panoramic radiographs of 1,608 children and adolescents aged 10 to 15 years (797 males and 811 females) were reviewed to determine the prevalence of tooth and jaw abnormalities. Abnormalities were detected on 21 percent of the radiographs (23 percent females and 17.3 percent males); 879 teeth were diagnosed with abnormalities on 331 radiographs. The more common abnormalities were malpositioned teeth, missing teeth, misshaped teeth, and teeth with hypoplastic appearance. Bony abnormalities and growth problems were detected in a few radiographs. This study demonstrates the value of panoramic radiography in detecting or confirming dental abnormalities, and supports recommendations on the use of panoramic radiography to aid in the assessment of dental development.
Early intervention to remove mesiodens and avoid orthodontic therapy.
Recognition of dental anomalies is essential in determining appropriate treatment for each patient. Diagnosis and assessment of mesiodens are critical in avoiding complications such as blocking the eruption of the maxillary central incisors, cyst formation, and dilaceration of the permanent incisors. Collecting data for diagnostic criteria, utilizing diagnostic radiographs, and determining when to refer to a specialist are important steps in the treatment of mesiodens. Early diagnosis and timely intervention could reduce or eliminate the need for orthodontic treatment and prevent serious complications.
Early removal of mesiodens.
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Natal and neonatal teeth: review of the literature.
Child development from conception through the first years of life is marked by many changes. Tooth eruption follows a chronology corresponding to the date when the tooth erupts into the oral cavity. These dates have been established in the literature and are subjected to small variations depending on hereditary, endocrine and environmental features. At times, however, the chronology of tooth eruption suffers a more significant alteration in terms of onset, and the first teeth may be present at birth or arise during the first month of life. The expectations about the eruption of the first teeth are great and even greater when the teeth appear early in the oral cavity. The objective of the present study was to present a review of the literature with important aspects about natal and neonatal teeth.
Diagnostic quiz #44. Case no. 2. Odontoma.
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Impacted maxillary canines--evaluation of reasons of occurrence and complications on the basis of own observations.
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Mesiodens: a retrospective study of fifty teeth.
A retrospective study of 30 cases of mesiodens is presented. male preponderance of 1.5:1. was 64% mesiodens were impacted and 36% erupted. Inverted impacted mesiodens was seen in 62.5% of the impacted mesiodens. 66.6% cases had 2 mesiodens per case. The harmful effects on the dentition were mostly crowding, rotation, diastema and impacted permanent incisor.
Management of a Class II deep bite malocclusion with combined straightwire appliance and bioprogressive therapy.
Development of straightwire appliances and improvement in archwire technology have simplified fixed appliance therapy in orthodontics. Although straightwire appliances are routinely used to treat most malocclusions, there are inherent limitations and it is necessary to look at the needs of each individual case rather than to simply proceed through a "cookbook" series of archwires to achieve a desired result. The Bioprogressive Therapy, although biomechanically complex, offers several advantages that can be integrated with the straightwire appliances to overcome the latter's shortcomings. This article illustrates the use of simplified Bioprogressive mechanics by means of utility arch in the treatment of a Class II deep bite malocclusion with high anchorage requirement.
Panoramic radiographic findings: case reports of ectopic teeth and antroliths within or adjacent to the maxillary sinus.
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Bilateral talon cusps in primary teeth: clinical significance and treatment.
Bilateral primary talon cusps are uncommon. This case report documents two new cases of bilateral talon cusps in the primary dentition. The clinical features, radiographic characteristics, and differential diagnosis of this developmental anomaly are described. The terminology, epidemiological data, potential complications, and various modes of treatment are reviewed and discussed. A new classification system was proposed. The dental anomalies of these two cases were not associated with any other somatic or dental abnormality. The general prognosis of this abnormality is satisfactorily good. However, the dentist needs to have early recognition of this anomaly in order to provide timely treatment in order to prevent potential complications.
[Double teeth].
Double teeth are not really rare, but it is still enigmatic why and how they develop. Based upon the clinical, morphological and anatomical appearance and the number of teeth in mouths with double teeth, the double teeth are labelled as products of 'fusion' and 'clefting', but the criteria to attach such etiological names are lacking. It is assumed that heredity is involved in the development of double teeth. Therefore it is attempted to explain why only one of a homozygotic twin had a double tooth.
Primary incisor triplication defect.
Conjoining abnormalities occur in less than 1 percent of the population. Triplication of primary teeth is even a rarer phenomenon with a prevalence of 0.02 percent. This study describes the clinical features and the light microscopic appearance of a case of triplicated primary teeth. The teeth with the conjoined defect were examined by light microscopy to evaluate the exact level and appearance of the fusion area. The light microscopic examination revealed grooves and cracks consisting of enamel and dentine in the fusion area, fusion was irregular and both dentin and cementum were confluent. It is concluded that the clinician should identify children were conjoined anomalies and should be aware of the oncoming problems.
Management of median diastema.
In mixed and early permanent dentitions, median diastema can be a major esthetic concern for patients and/or their parents. The space can be transient or created by developmental, pathological, or iatrogenic factors. Different treatment techniques have been proposed to manage the situation. This paper reviews the common causes of median diastema and presents four cases to illustrate a range of restorative and orthodontic options.
[Secondary retention of permanent molars. I. Clinical, radiologic and histologic characterization].
The clinical, radiographical and histological aspects of secondary retention in permanent molars were studied in a group of 53 patients with 81 secondarily retained permanent molars. First molars turned out to be affected most frequently. The mean infraocclusion at the patients' first visit was 4.3 mm. After six months, infraocclusion had increased in adolescents. It seemed to be stable in adults. Tilting of adjacent teeth was observed in 39 cases of secondary retention. A solid, clear percussion sound and a partial absence of the periodontal ligament space on radiographs was only noted in less than 20% of the affected molars, while histological examination of 38 removed molars revealed that local areas of ankylosis were present in all cases. During a follow-up period of four years, six new cases of secondary retention were observed in the same population.
Maxillary molar transposition.
To date, five types of maxillary tooth transposition are described in the international literature (canine/first premolar; canine/lateral incisor; lateral incisor/central incisor; canine/central incisor site; canine/first molar site), although the latter two are indeed extreme displacements and not true transpositions. In the present article a sixth type of transposition is recognized and described: the maxillary molar transposition (MxM3M2 and MxM4M3, respectively). Three cases of this anomaly were presented. The occurrence is extremely rare, about 0.04 percent in a sample of 7,000 orthodontic patients. Investigation of other family members (especially parents and siblings) could not substantiate an hypothesis of inheritance of this anomaly. Other possible causes (trauma, caries, tooth agenesis) were also absent in these cases.
Cleidocranial dysplasia--a case report.
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