Amyloidosis is the deposition of amyloid proteins in body tissues leading to tissue damage. Amyloidosis is classified as either primary or secondary. The former results from multiple myelomaor an idiopathic disease, while the latter is a sequela of a chronic or inflammatory disease process. These classifications are based on the type of fibrillar protein deposited. The primary form usually affects the skin, heart, tongue, and GI tract, while the secondary form, although more common, has no cutaneous manifestations. Continue reading
Author Archives: chzechze
Delayed eruption of teeth Part 6
DTE with no obvious developmental defect in the affected tooth or teeth on the radiograph
In this case, root development (biologic eruption status), tooth position, and physical obstruction (radiographically evident or not) should be evaluated. Continue reading
Delayed eruption of teeth Part 5
DTE is often seen in the region of the maxillary canines. The maxillary canine develops high in the maxilla and is the only tooth that must descend more than its length to reach its position in the dental arch. When pathologic conditions are ruled out, the etiology of DTE of the canines has been suggested to be multifactorial. Specifically, 3 factors have been proposed for consideration: Continue reading
Delayed eruption of teeth Part 4
Other systemic conditions associated with impairment of growth, such as anemia (hypoxic hypoxia, histotoxic hypoxia, and anemic hypoxia) and renal failure, have also been correlated with DTE and other abnormalities in dentofacial development. Continue reading
Delayed eruption of teeth Part 3
Mucosal barrier has also been suggested as an etiologic factor in DTE. Any failure of the follicle of an erupting tooth to unite with the mucosa will entail a delay in the breakdown of the mucosa and constitute a barrier to emergence. Histologic studies have shown differences in the submucosa between normal tissues and tissues with a history of trauma or surgery. Gingival hyperplasia resulting from various causes (hormonal or hereditary causes, vitamin C deficiency, drugs such as phenytoin) might cause an abundance of dense connective tissue or acellular collagen that can be an impediment to tooth eruption. Continue reading
Delayed eruption of teeth Part 2
Primary or idiopathic failure of eruption is a condition described by Profitt and Vig, whereby nonankylosed teeth fail to erupt fully or partially because of malfunction of the eruption mechanism. This occurs even though there seems to be no barrier to eruption, and the phenomenon is considered to be due to a primary defect in the eruptive process. Terms such as arrested eruption and noneruption have been used interchangeably to describe a clinical condition that might have represented ankylosis, impaction, or idiopathic failure of eruption. These terms refer more to the pathogenesis of DTE than to the benchmarks that define DTE. Continue reading
Delayed eruption of teeth Part 1
Eruption is the axial movement of a tooth from its nonfunctional position in the bone to functional occlusion. However, eruption is often used to indicate the moment of emergence of the tooth into the oral cavity. The normal eruption of deciduous and permanent teeth into the oral cavity occurs over a broad chronologic age range. Racial, ethnic, sexual, and individual factors can influence eruption and are usually considered in determining the standards of normal eruption. True and significant deviations from accepted norms of eruption time are often observed in clinical practice. Premature eruption has been noted, but delayed tooth eruption (DTE) is the most commonly encountered deviation from normal eruption time. Continue reading
Eruption dates
Human beings have two sets of teeth —- Primary (milk teeth) and Permanent. There are 20 primary and 32 permanent teeth. In some people one or more teeth may be absent, or they may have some extra teeth (supernumerary). Usually the first primary teeth erupt by 6 months and the first permanent by 6 years of age. Children loose their milk teeth between 6 and 11 years of age. By the age of 13 years almost all the permanent teeth have erupted: 8 incisors, 4 canines, 8 premolars and 12 molars. The last 4 molars commonly known as wisdom teeth appear much later, between 18 to 21 years. The main function of your teeth is to chew and cut food. Anterior teeth are used to bite and tear food while the posterior teeth help in chewing. Hence your dental health is an important part of your general health and your overall well-being. Continue reading
Hall technique Part 5
Important additional notes
1) The crowns used in the research presented here were Ni-Cro Primary Molar Crowns, cemented with AquaCem, both from
3M/ESPE. Any adjustment of the crowns was minimal, and was limited to re-molding the crown margins in some cases with orthodontic band forming pliers. No crown had the margin trimmed. Continue reading
Hall technique Part 4
4. If possible, the tooth should be dried prior to cementation, but otherwise there is no caries removal or tooth preparation of
any kind. No local anaesthetic injection is given. Continue reading