Anodontia
Denture, Complete, Lower
X trisomy in an infertile bitch: cytogenetic, anatomic, and histologic studies. (1/197)
Three copies of the X chromosome were identified in a 5-year-old mixed breed infertile bitch. One year after the cytogenetic examination, the bitch died due to gastritis hemorrhagica, an inflammation of the mucus coat of the stomach. Dental studies showed congenital lack of some premolar and molar teeth. Ovaries were of normal shape and size. Also, histologic sections of the ovaries revealed their normal structure, with two corpora lutea and primary follicles. Phenotypic effects of X trisomy are discussed. (+info)Persistence of deciduous molars in subjects with agenesis of the second premolars. (2/197)
The purpose of the present study was to investigate persistent primary second molars in a group of young people in their late twenties with agenesis of one or two second premolars. In 1982-83 it was decided, in connection with the orthodontic evaluation of 25 patients, to allow 35 primary molars (one or two in each patient) to remain in situ. All patients had mixed dentitions and agenesis of one or two premolars. The primary teeth were generally in good condition, although root resorption and infra-occlusion (compensated by occlusal composite onlays) occurred. In 1997, 18 of the 25 patients with a total of 26 retained primary molars were reexamined, comprising a clinical examination for exfoliation, extraction, loosening, and ankylosis, and a radiographic examination for root resorption, tooth morphology (crown and root), and alveolar bone contour. The examination showed that the degree of root resorption was unaltered in 20 of the 26 primary molars. In the permanent dentitions, where these primary molars persisted, there were no morphological deviations. Three of the six remaining primary molars had been extracted and three showed extensive resorption. In three of the 26 primary molars the infra-occlusion had worsened. The present study shows that persistence of primary second molars in subjects with agenesis of one or two premolars, and normal morphology of the permanent dentition can be an acceptable, semi-permanent solution for the patient. Whether this could also be an acceptable long-term solution will be shown by follow-up studies. (+info)The long-term survival of lower second primary molars in subjects with agenesis of the premolars. (3/197)
This study investigated 41 subjects, 13 male and 28 female, with agenesis of one or both lower second premolars, and with retained lower second primary molars. Intra-oral radiographs of 59 primary teeth were examined to judge the resorption of the mesial and distal roots, and were measured to record infra-occlusion of the primary teeth and tipping of the adjacent permanent teeth. The study commenced at 11-12 years of age. The mean age at the last measurement was 20 years 6 months (SD 3.62, range 13.6-31.8 years). During the observation period, only two of the 59 primary teeth were exfoliated. Five were extracted, two of which were replaced by upper third molar transplants. Beyond the age of 20 years no teeth were lost. Root resorption varied widely between individuals, but was slow. There was no typical pattern for development of infra-occlusion. Mean infra-occlusion was 0.47 mm (SD 1.13) at 11-12 years, increasing by less than 1.0 to 1.43 mm (SD 1.13) at age 17-18 years. At age 19-20 years, 55 per cent of teeth showed infra-occlusion between 0.5 and 4.5 mm, but 45 per cent showed no infra-occlusion. The space between the first molar and first premolar was a mean of 10.35 mm (SD 0.76) at age 10-12 years compared with the mean width of the second primary molar of 10.53 mm (SD 0.51). The space reduced by less than 0.5 mm to 9.95 mm (SD 1.50) at age 17-18 years. If primary molars are present at 20 years of age they appear to have a good prognosis for long-term survival. (+info)An analysis of the skeletal relationships in a group of young people with hypodontia. (4/197)
The objective of this investigation was to examine the dentofacial features of a group of patients with hypodontia, in particular assessing whether cephalometric analysis confirmed the clinical assumption of a reduced lower face height, and to determine the relationship of these facial features with different numbers of missing teeth. It took the form of a cephalometric study, undertaken in a dedicated Dental Hospital clinic for patients with hypodontia. The study group comprised 59 patients seen on the Hypodontia Clinic: 32 females, 27 males, mean age 13.1+/-3.1 years (range 6-23 years). The average number of missing teeth was 7 (SD 5), ranging from 1 to 21. The mean SNA, SNB, and MMA angles were within normal limits, but there was a statistically significant reduction in the MMA when more than one tooth type was missing (P = 0.007) and the ANB angle decreased as the number of missing tooth types increased (P = 0.034). The mean values for the whole sample were within the normal range and did not demonstrate any feature specific to the group, but patients with more severe hypodontia showed tendencies to a Class III skeletal relationship and a reduced maxillary-mandibular planes angle. (+info)Congenitally missing maxillary lateral incisors and orthodontic treatment considerations for the single-tooth implant. (5/197)
Implant restorations have become a primary treatment option for the replacement of congenitally missing lateral incisors. The central incisor and canine often erupt in less than optimal positions adjacent to the edentulous lateral incisor space, and therefore preprosthetic orthodontic treatment is frequently required. Derotation of the central incisor and canine, space closure and correction of root proximities may be required to create appropriate space in which to place the implant and achieve an esthetic restoration. This paper discusses aspects of preprosthetic orthodontic diagnosis and treatment that need to be considered with implant restorations. (+info)Survey of dental treatments for pediatric patients referred to the pediatric dental clinic of a dental school hospital. (6/197)
This survey was conducted to clarify which dental treatments in children are regarded as difficult by general dentistry practitioners. The subjects were 615 children who first visited Tokyo Dental College Chiba Hospital from January 1995 to August 1999 with reference letters. There were 615 children in the study; 571 (92.8%) came from Chiba City where our hospital is located and the 11 regions surrounding Chiba City. The prime reasons for referral in the order of frequency were treatments of dental caries, malalignment/malocclusion, traumatized teeth, supernumerary teeth, retarded eruption/impacted teeth, abnormal direction of erupted teeth, congenitally missing teeth, prolonged retention of deciduous teeth, and abnormal frenulum. Patients with dental caries or traumatized teeth in the deciduous dentition period and those with malalignment/malocclusion, supernumerary teeth, or retarded eruption/impacted teeth in the mixed dentition period were often referred to medical organizations specializing in pediatric dentistry because of the difficulties in controlling the patients' behavior and in providing adequate treatment. The information about pediatric dental treatments considered difficult by general dentists revealed by this survey appears to be useful and needs to be incorporated in the programs for clinical training of undergraduate students and education of postgraduate students. (+info)The congenitally missing upper lateral incisor. A retrospective study of orthodontic space closure versus restorative treatment. (7/197)
Orthodontic treatment for patients with uni- or bilateral congenitally missing lateral incisors is a challenge to effective treatment planning. The two major alternatives, orthodontic space closure or space opening for prosthetic replacements, can both compromise aesthetics, periodontal health, and function. The aim of this retrospective study was to examine treated patients who had congenitally missing lateral incisors and to compare their opinion of the aesthetic result with the dentists' opinions of occlusal function and periodontal health. In this sample, 50 patients were identified. Thirty had been treated with orthodontic space closure, and 20 by space opening and a prosthesis (porcelain bonded to gold and resin bonded bridges). The patient's opinion of the aesthetic result was evaluated using the Eastman Esthetic Index questionnaire and during a structured interview. The functional status, dental contact patterns, periodontal condition, and quality of the prosthetic replacement was evaluated. In general, subjects treated with orthodontic space closure were more satisfied with the appearance of their teeth than those who had a prosthesis. No significant differences in the prevalence of signs and symptoms of temporomandibular dysfunction (TMD) were found. However, patients with prosthetic replacements had impaired periodontal health with accumulation of plaque and gingivitis. The conclusion of this study is that orthodontic space closure produces results that are well accepted by patients, does not impair temporomandibular joint (TMJ) function, and encourages periodontal health in comparison with prosthetic replacements. (+info)Face, palate, and craniofacial morphology in patients with a solitary median maxillary central incisor. (8/197)
The occurrence of a solitary median maxillary central incisor (SMMCI) is a very rare condition and might be a sign of a mild degree of holoprosencephaly. In this investigation, material from 10 patients, nine girls and one boy with a SMMCI (8-17 years of age) registered in orthodontic clinics was examined. The purpose was to evaluate the clinical characteristics and craniofacial morphology in this group of patients. Oral photographs, study casts, profile radiographs, and orthopantomograms were analysed. The study showed that this group of SMMCI patients were characterized by an indistinct philtrum, an arch-shaped upper lip, absence of the fraenulum of the upper lip, a complete or incomplete mid-palatal ridge, a SMMCI, and nasal obstruction or septum deviation. The craniofacial morphology of the nine girls, compared with normal standards for girls showed a short anterior cranial base, a short, retrognathic and posteriorly inclined maxilla, and a retrognathic and posteriorly inclined mandible. Furthermore, the sella turcica had a deviant morphology in five of the 10 subjects. The results indicate that the presence of a SMMCI should not be considered as a simple dental anomaly, since it may be associated with other clinical characteristics and more complex craniofacial malformations. It is therefore suggested that the SMMCI condition in future studies is classified according to clinical symptoms and craniofacial morphology. (+info)Anodontia is a medical term that refers to the congenital absence or lack of development of all primary (deciduous) and/or permanent teeth. It is a rare dental condition that affects tooth development and can be isolated or associated with various syndromes and genetic disorders.
In anodontia, the dental tissues responsible for forming teeth, including the dental lamina, dental papilla, and dental follicle, fail to develop properly, resulting in missing teeth. The condition can affect all teeth or only some of them, leading to partial anodontia.
Anodontia is different from hypodontia, which refers to the congenital absence of one or more, but not all, teeth. It is also distinct from oligodontia, which is the absence of six or more permanent teeth, excluding third molars (wisdom teeth).
People with anodontia may experience difficulties in chewing, speaking, and maintaining oral hygiene, leading to various dental and social problems. Prosthodontic treatments, such as dentures or implants, are often necessary to restore oral function and aesthetics.
A complete lower denture is a removable dental appliance that replaces all of the natural teeth in the lower jaw. It is typically made of plastic or a combination of plastic and metal, and it rests on the gums and bones of the lower jaw. The denture is designed to look and function like natural teeth, allowing the individual to speak, chew, and smile confidently. Complete lower dentures are custom-made for each patient to ensure a comfortable and secure fit.
Tooth abnormalities refer to any variations or irregularities in the size, shape, number, structure, or development of teeth that deviate from the typical or normal anatomy. These abnormalities can occur in primary (deciduous) or permanent teeth and can be caused by genetic factors, environmental influences, systemic diseases, or localized dental conditions during tooth formation.
Some examples of tooth abnormalities include:
1. Microdontia - teeth that are smaller than normal in size.
2. Macrodontia - teeth that are larger than normal in size.
3. Peg-shaped teeth - teeth with a narrow, conical shape.
4. Talon cusps - additional cusps or points on the biting surface of a tooth.
5. Dens invaginatus - an abnormal development where the tooth crown has an extra fold or pouch that can trap bacteria and cause dental problems.
6. Taurodontism - teeth with large pulp chambers and short roots.
7. Supernumerary teeth - having more teeth than the typical number (20 primary and 32 permanent teeth).
8. Hypodontia - missing one or more teeth due to a failure of development.
9. Germination - two adjacent teeth fused together, usually occurring in the front teeth.
10. Fusion - two separate teeth that have grown together during development.
Tooth abnormalities may not always require treatment unless they cause functional, aesthetic, or dental health issues. A dentist can diagnose and manage tooth abnormalities through various treatments, such as fillings, extractions, orthodontic care, or restorative procedures.
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Anodontia - Wikipedia
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Hypodontia4
- whereas partial anodontia (or hypodontia), involves two dentitions or only teeth of the permanent dentition (Dorland's 1998). (wikipedia.org)
- The occurrence of anodontia is less so than hypodontia which has a prevalence of 0.1-0.7% in primary teeth and 3-7.5% in permanent teeth. (wikipedia.org)
- Hypodontia and anodontia are frequently associated with a multitude of genetic disorders and syndromes, approximately 70. (wikipedia.org)
- In mesoectodermal dysplasia the symptoms are anodontia and hypodontia. (wikipedia.org)
Signs of anodontia2
- Three syndromes which classically have signs of anodontia are oculomandibulodyscephaly, mesoectodermal dysplasia and ectodermal dysplasia. (wikipedia.org)
- After the medicine undergoes the necessary tests, the scientists shared that they want it to be used to treat children ages two to six who have signs of anodontia. (naturalnews.com)
Edentula3
- Bacteria, elemental sulfur and stable carbon isotope rations in the mangrove mud clam Anodontia Edentula (Linne, 1758) / by Ma. (edu.ph)
- Bacteria, elemental sulfur and stable carbon isotope ratios in the mangrove mud clam Anodontia edentula (Linné, 1758). (edu.ph)
- Thesis Adviser: Dr. Jose A. Ingles Different sizes of the mangrove mud clam Anodontia edentula were collected from the mangroves in Brgy. (edu.ph)
Partial2
- Ectodermal dysplasia is a rare condition characterized by complete or partial anodontia and by defects in other ectodermal structures. (jamanetwork.com)
- The term 'partial anodontia' is obsolete (Salinas, 1978). (nih.gov)
Congenital absence2
- Anodontia is a rare genetic disorder characterized by the congenital absence of all primary or permanent teeth. (wikipedia.org)
- A congenital absence of the teeth other than by extraction or impaction: The dentist built a set of dentures for Muriel to make up for the anodontia in her upper jaw when she was born. (wordinfo.info)
Ectodermal4
- Typically, these symptoms are seen because anodontia is typically associated with ectodermal dysplasia. (wikipedia.org)
- In the rare case that ectodermal dysplasia is not present, anodontia will be caused from an unknown genetic mutation. (wikipedia.org)
- Anodontia typically occurs with the presence of ectodermal dysplasia, which is a group of disorders where two or more ectodermally derived structures will have abnormal development. (wikipedia.org)
- Syndromes particularly involved with ectodermal involvement are a prime circumstance for anodontia to occur, some examples of these are: Rieger's, Robinson's and focal dermal hypoplasia. (wikipedia.org)
Teeth7
- The main sign of anodontia is when a child has not developed any of their permanent teeth by the age of 12. (wikipedia.org)
- Another sign of anodontia can include the absence of baby teeth when the baby has reached 12 to 13 months. (wikipedia.org)
- Anodontia alone will not have an effect on any other body part besides teeth being missing. (wikipedia.org)
- Anodontia can be diagnosed when a baby does not begin to develop teeth around the age of 12 to 13 months or when a child does not develop their permanent teeth by the age of 10. (wikipedia.org)
- If six or more permanent teeth are missing, the condition is known as oligodontia, and as anodontia when no natural teeth are present. (bigsmiledental.com)
- Complete loss of all the permanent teeth is termed anodontia. (dental.cx)
- Which Teeth Are Normally Considered Anodontia. (ldcjps.com)
Cleft2
- Symptoms that are associated with anodontia include: alopecia, lack of sweat glands, cleft lip or palate, and missing fingernails. (wikipedia.org)
- Other symptoms associated with anodontia include: Alopecia, loss of sweat glands, cleft lip or palate, or missing finger nails. (wikipedia.org)
Syndrome2
- Anodontia is usually part of a syndrome and seldom occurs as an isolated entity. (wikipedia.org)
- Anodontia is a genetic disorder that is typically occurs in result of another syndrome. (wikipedia.org)
Term1
- Anodontia being the term used in controlled vocabulary Medical Subject Headings (MeSH) from MEDLINE which was developed by the United States National Library of Medicine. (wikipedia.org)
Condition1
- Individuals with this condition are perceived as socially most aggressive compared with people without anodontia (Shaw 1981). (wikipedia.org)
Present1
- If Anodontia is present in the maternal or paternal side, the chances of this being inherited are increased. (wikipedia.org)
Associated with ectodermal dysplasia1
- Typically, these symptoms are seen because anodontia is typically associated with ectodermal dysplasia. (wikipedia.org)
Abnormalities1
- Dystrophic nails, sparse wiry hair and a variety of dental (e.g. notched incisors, longitudinal grooving, enamel defects, anodontia, delayed eruption) and ocular abnormalities (e.g. chorioretinal colobomas, microphthalmia, microcornea, anophthalmia, iris colobomas) can occur. (geneskin.org)
Genetic4
- In the rare case that ectodermal dysplasia is not present, anodontia will be caused from an unknown genetic mutation. (wikipedia.org)
- Anodontia is a genetic disorder that is typically occurs in result of another syndrome. (wikipedia.org)
- Our research aimed to look into the clinical traits and genetic mutations in sporadic non-syndromic anodontia and to gain insight into the role of mutations of PAX9, MSX1, AXIN2 and EDA in anodontia phenotypes, especially for the PAX9. (nih.gov)
- The best reason to perform cosmetic dentistry procedures on children and adolescents is because they have a genetic need for it-such as anodontia. (guimac.com)
Tooth1
- Any tooth in the mouth can be affected by anodontia, however the incisors, premolars, and third molars are the most frequently affected. (teethinfection.com)
Occurrence1
- While genetics often play a starring role in its occurrence, the effects of Anodontia ripple out, influencing not just the dental landscape but also an individual's psychological fabric. (localquoter.net)
Alopecia2
- Symptoms that are associated with anodontia include: alopecia, lack of sweat glands, cleft lip or palate, and missing fingernails. (wikipedia.org)
- Other symptoms associated with anodontia include: Alopecia, loss of sweat glands, cleft lip or palate, or missing finger nails. (wikipedia.org)
Diffuse1
- 16. Unilateral linear basal cell nevus associated with diffuse osteoma cutis, unilateral anodontia, and abnormal bone mineralization. (nih.gov)
Hypoplasia1
- Syndromes particularly involved with ectodermal involvement are a prime circumstance for anodontia to occur, some examples of these are: Rieger's, Robinson's and focal dermal hypoplasia. (wikipedia.org)
Dentures1
- In anodontia the treatment of choice is conventional complete dentures at an early stage. (com.pk)
Patients1
- Patients received treatment with either a two-step or an en masse procedure to close the extraction spaces after alignment and leveling with the same preadjusted appliances. (allenpress.com)
Entity1
- Anodontia is usually part of a syndrome and seldom occurs as an isolated entity. (wikipedia.org)
Dental5
- Whether you're a dental professional, someone who's experienced this condition firsthand, or just an inquisitive mind, a grasp on Anodontia is enlightening. (localquoter.net)
- With advancements in dental science, awareness, and understanding of conditions like Anodontia becomes even more crucial, paving the way for better treatments, empathetic interactions, and an inclusive society. (localquoter.net)
- Anodontia has etched its mark in the annals of dental literature as one of the most enigmatic conditions. (localquoter.net)
- As you delve into this dental world, the first point of intrigue is understanding what Anodontia truly signifies. (localquoter.net)
- Anodontia surfaces when these buds don't form, leaving a void in the dental arch. (localquoter.net)
Children1
- It will first be aimed at children aged 2-6 who exhibit anodontia. (oralhealth.news)
Presence1
- Anodontia typically occurs with the presence of ectodermal dysplasia, which is a group of disorders where two or more ectodermally derived structures will have abnormal development. (wikipedia.org)
Study1
- Yet, the study of Anodontia remains an evolving field, with newer discoveries and revelations waiting around the corner. (localquoter.net)
Sources1
- Surveys and interviews were conducted to determine sources and habitat of Anodontia edentula. (seafdec.org)