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At least 919 records · Page 51Linked to original sources
PubMed2004

[Dentoalveolar surgery for the dentist: removal of third molar].

In contrast to removal of other teeth and roottips, a third molar is mostly removed for preventive reasons. There is still debate about the correct indications for removal of third molars. As soon as the decision to remove a third molar surgically is made, the dentist has to decide between performing the surgical procedure himself or referring the patient to an oral and maxillofacial surgeon. Level of difficulty of the treatment and experience, available time, availability for postoperative care, and personal interest of the dentist are issues influencing this decision. This article describes systematically the indications, for instance using preoperative radiodiagnostics, the factors determining the technical surgical plan, as well as the practical surgical procedures.

Decision Trees↗
PubMedDate not supplied

Oral manifestations in Ellis-van Creveld syndrome: report of five cases.

Ellis-van Creveld syndrome, or chondroectodermal dysplasia, is an autosomal recessive disorder with characteristic clinical manifestations. Its incidence in the general population is low. The oral manifestations of Ellis-van Creveld are found in soft tissues and teeth, but the dental literature on the subject is scarce. In the last 20 years, 5 cases of Ellis-van Creveld syndrome have been followed at the Pediatric Dentistry Service of the Hospital Sant Joan de Déu, Barcelona. The present study describes the constant and variable oral findings in these patients, which play an important role in the diagnosis criteria for the syndrome. The presence of a great variety of oral manifestations such as fusion of the upper lip to the gingival margin, presence of multiple frenula, abnormally shaped and microdontic teeth, and congenitally missing teeth requires multidisciplinary dental treatment, with consideration for the high incidence of cardiac defects in these patients.

Anodontia↗
PubMedDate not supplied

Orthodontic-surgical management of an impacted dilacerated maxillary central incisor: a clinical case report.

Dilaceration is one of the causes of maxillary central incisor eruption failure. Surgical excision is frequently the first choice of treatment for a severely dilacerated incisor. In this article, the case of a horizontally impacted and dilacerated maxillary central incisor was diagnosed and treated by surgical exposure using the apically repositioned flap technique combined with orthodontic traction. The dilacerated incisor was successfully moved into alignment, with pulpal vitality and periodontal health present 2 years following treatment.

Child↗
PubMed2004

Metallic materials stimulating bone formation.

Metallic materials implanted into bone defects are generally encapsulated by a fibrous tissue. Some metallic materials such as titanium and tantalum, however, have been revealed to bond to the living bone without forming the fibrous tissue, when they were subjected to NaOH solution and heat treatments. Thus treated metals form bone tissue around them even in muscle, when they take a porous form. This kind of osteoconductive and osteoinductive properties are attributed to sodium titanate or tantalate layer on their surfaces formed by the NaOH and heat treatments. These layers induce the deposition of bonelike apatite on the surface of the metals in the living body. This kind of bioactive metals are useful as bone substitutes even highly loaded portions, such as hip joint, spine and tooth root.

Alloys↗
PubMed2004

[Unusual cause of the acute appendicitis].

Exogenous foreign particles in the appendix rarely case appendicitis. Their prevalence is reported to be 0.0005%. This fact makes both lay and medical community underestimate possible complications related to the presence of foreign particles in the appendix lumen. Our case review documents risks related with swallowing a sharp foreign particle. The particle concerned was a tooth root--on prosthesis with an acrylic crown, which caused acute appendicitis with the appendical wall perforation by the above mentioned foreign body.

Acute Disease↗
PubMed2005

Factors influencing the non-surgical eruption of palatally impacted canines.

BACKGROUND: Many palatally impacted canines in children do not require surgical exposure prior to the start of orthodontic treatment. They erupt in mid-alveolar positions providing excess space is made for them in the arch. The time required for an impacted tooth to emerge under these conditions is highly variable. AIM: To determine the factors influencing the time required for a palatally impacted canine to spontaneously disimpact following orthodontic treatment to create excess space in the arch. METHOD: Thirty palatally impacted canines, which emerged following orthodontic treatment to open excess space in the arch, were used. The impacted teeth were present in 28 children. No canines were surgically exposed. The positions of the impacted canines before treatment, the mesiodistal widths and rotations of the adjacent and contralateral lateral incisors, age and gender of the subjects, subjects' dental ages, presence of either incisor or premolar hypodontia, number of subjects with bilaterally impacted canines, and number of siblings with impacted canines were recorded. Canines that erupted in less than nine months of treatment were compared with canines that required more than nine months of treatment. The canines were grouped by severity of impaction (sectors II - IV) and compared. RESULTS: There were significantly more severe (sector IV) impactions in the long duration group compared with the short duration group. Significantly more cases of incisor-premolar hypodontia were found in the short duration group. Canines impacted in sector IV emerged after 21 months of treatment and canines in sectors II and III emerged after eight months of treatment. Lateral incisors adjacent to the impacted teeth were rotated mesiolabially to a greater extent in the sector IV group compared with lateral incisors in the sector II group. Differences in rotation of the adjacent and contralateral lateral incisors were significantly less in the sector II group compared with the lateral incisors in the sector III and IV groups. CONCLUSIONS: The sector of impaction was the best guide to the duration of treatment prior to emergence.

Adolescent↗
PubMed1991

Mineral content of different areas of human dentin in hypophosphataemic vitamin D-resistant rickets.

Calcium, phosphorus, fluoride, sodium, magnesium and zinc estimations were carried out on teeth from a patient with hypophosphataemic vitamin D-resistant rickets (HVDRR) and from a patient with acquired rickets with the aim of determining differences in the composition of dentine in these two types of rickets. Normal deciduous teeth served as controls. Mineral analyses were carried out using an electron probe micro-analyser after carefully polishing the hemisected specimens. After the analyses the specimens were coated with gold-palladium for more detailed SEM studies. The Ca, P, F and Zn contents of the calcospherites were normal, while there was more Na and less Mg in the dentine of HVDRR teeth than of controls. The significance of this remains unexplained. The mineral content of the interglobular spaces was very limited, but there was more Zn in these than in other parts of the HVDRR teeth, in the acquired rickets teeth or in the control teeth. The excess of Zn in the interglobular spaces is thought to have an effect on the mineralisation process in HVDRR teeth. The globular nature of HVDRR teeth is thought to be genetically controlled and the result of a reduction in the number of calcification nuclei. The globular nature of the HVDRR teeth was not due to lack of Ca and P, as the serum levels of these minerals were maintained within normal limits during tooth development by controlled phosphate supplementation. Because in acquired rickets the globules were seen at the developmental stage that the teeth had reached when the nutritional disturbance occurred, the fault in mineralisation is thought to be different from that in HVDRR teeth.(ABSTRACT TRUNCATED AT 250 WORDS)

Calcium↗