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Results 551 - 600 of 674
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Bedi R - - 1991
The prevalence of double teeth in the primary dentition, for the British schoolchild, is 1.6%. Although primary double teeth in the anterior region of the mouth are not uncommon, double teeth in the primary molar region are rare. This case report describes the intra-oral findings, and in particular a case ...
Takeda Y - - 1991
This paper reports a case of multiple dens invaginatus (DI) bilaterally involving the maxillary central incisors, mandibular canines, and first premolars. The patient was a 11-year-old boy with steeple-head and mild mental retardation. The maxillary central incisors showed disproportionately large crowns and short roots. A roentgenographic survey of the skeletal ...
Manschot A - - 1991
This case report describes a patient in whom orthodontic treatment and poor oral hygiene resulted in a severe mucogingival problem associated with a mandibular incisor tooth. Following mucogingival surgery, the esthetic and the oral hygiene maintenance problems were resolved. Orthodontic treatment carried out without periodontal consideration may, in some cases, ...
Breckon J J - - 1991
A case is presented in which two supernumerary teeth developed in the mandibular premolar region during orthodontic treatment. Their presence was only detected on a routine post-treatment radiograph. The potential hazards of space closure with such teeth present are considered, although there were no detrimental effects in the case illustrated.
Muto T - - 1991
We report a case of pycnodysostosis and review 54 cases of this syndrome in the Japanese literature, with special emphasis on oral and maxillofacial findings. Common findings were as follows: hypoplasia of maxilla and mandible, hypopneumatization of the maxillary sinuses, loss of mandibular angle, a grooved palate, and malpositioned teeth.
Swan R H - - 1991
Hemisection is a viable option to complete extraction in those situations where a portion of a tooth can still perform in health and function after the diseased portion has been removed. A case report is presented describing the hemisection of a mandibular first molar in a dog. Indications and contraindications ...
Smart E R - - 1991
A case is reported of severe loss of alveolar bone in the maxilla, as a result of leakage into the tissues of an arsenical paste from the pulp chamber of an endodontically 'treated' tooth. The history of the use of arsenic in dentistry is discussed, as are the hazards inherent ...
Fowler P - - 1991
This report of a 10-year-old boy illustrates the limitations of the focal trough in panoramic radiography. Because of the patient's large overjet, a supernumerary upper incisor tooth was not visible on a panoramic radiograph. The positioning of the patient within the panoramic machine is critical in obtaining the best possible ...
Messkoub M - - 1991
An interesting case of intentional reimplantation, in which the distal root of a mandibular molar was reimplanted after hemisection, is reported for the first time. This root served as the distal abutment for a three-unit bridge. A 3-year follow-up revealed a successful outcome, with a clinically asymptomatic and functional tooth ...
Shanmuhasuntharam P - - 1991
Transmigration is the migration of a tooth across the midline of the jaw. This phenomenon is found only in relation to the permanent mandibular canines. Two cases are reported. In both, the cause of this deviation was an odontome found in the site normally occupied by the mandibular canine. The ...
Goon W W - - 1991
A case report of a developmental anomaly known as a radicular groove is presented. This case is unusual in that it is believed to be the first reported case of complex involvement of the entire facial aspect of a tooth root. An alveolar crest to apex facial root defect in ...
Parker M W - - 1991
This article reviews the recent literature related to occlusal considerations in restorative dentistry. The major topics include the assessment and treatment of occlusal wear, the controversies surrounding treatment position of the mandibular condyles, occlusal considerations in osseointegrated prostheses, the two-way relationship between occlusal factors and temporomandibular disorders, design criteria and ...
Chindia M L - - 1991
A case of an ameloblastoma diagnosed about 3 1/2 years after removal of an impacted mandibular 3rd molar is presented. The pre-operative radiographs, though poor in quality, showed an ill-defined radiolucency in relation to the tooth. This feature was not apparent to the examiners at the time of first presentation. ...
Harris E F - - 1991
Supernumerary lingual tubercles ("talon cusps") in three North American Indians are reported. These cusp-like structures typically occur unilaterally on permanent maxillary lateral incisors. We speculate that sporadic occurrences of this type probably are induced by trauma or other localized insults affecting the tooth germ. Multiple occurrences in an individual may ...
Steelman R - - 1991
Premature loss of the primary mandibular cuspid has been considered rare. When this occurs, however, space maintenance should be considered to prevent distal drifting of the lateral incisor. The purpose of this case report was to document traumatic avulsion of the mandibular right lateral and cuspid. A lingual arch appliance ...
Schuberth G - - 1990
This case report is presented in accordance with the specifications of the American Board of Orthodontics. Before treatment, the patient had a unilateral transverse discrepancy and dentoskeletal Class II malocclusion. Clinically, however, the profile was acceptable. She was treated with an orthodontic and orthognathic surgical approach. Interesting treatment-planning considerations included ...
Mackie I C - - 1990
A large overjet is a well-recognised predisposing factor to traumatic injuries of upper incisor teeth. In order to reduce this risk factor, early reduction of an increased overjet has been recommended. This was attempted, but unfortunately was unsuccessful and further trauma resulted in loss of the upper central incisor teeth.
Treasure P - - 1990
This case presents a novel application of adhesive technology to treat a deep traumatic overbite in a patient unable to tolerate a removable appliance. Cast metal shelves were bonded into palatal surfaces of the upper anterior teeth. Three lower incisors required post crowns which were proclined slightly to engage the ...
Parameswaran A - - 1990
Morphogically the mandibular second premolars present one root canal (97.5%). So far only a small percentage (2.5%) of cases were reported to have two root canals where they present the canals on the buccal and lingual direction of the root. Here an unusual case of two root canals, which are ...
Bevilacqua P - - 1990
This case report emphasizes two clinical findings that aid in the diagnosis of eruptive hidradenoma. They are the predilection of the lesions for the anterior rather than posterior surface of the trunk and the presence of milialike inclusions within the papules. Eruptive hidradenomas are appendageal tumors that differentiate toward intraepidermal ...
Yamamura O - - 1990
This report presents the phonetic changes of a patient whose occlusal vertical dimension is extended. His chief complaint is esthetic restoration of his anterior teeth, but his occlusal vertical dimension is abnormally shortened by long-time attrition. Therefore we extended his occlusal vertical dimension, and reconstructed his occlusion, and carried out ...
O'Reilly P M - - 1990
Four cases of tooth fusion are presented. Three of the patients were female and one male. Radiographic examination revealed union of calcified tissues with discrete root canals and a common pulp chamber in Case 3 and the converse in Case 4. The finding of fused mandibular incisors and canines in ...
Hempenstall P D - - 1990
Although the healing of extraction sites is generally a rapid and uncomplicated process, delayed healing or overt infection of recent extraction sockets may involve a variety of causes and the clinician must be aware pre-operatively of both local and systemic influences. Retarded or non-healing extraction sites always require investigation. This ...
Raez A G - - 1990
Regional odontodysplasia is a rare developmental anomaly with an unknown cause. This disorder involves both the ectodermal and mesodermal dental layers. The affected teeth generally cannot be rehabilitated for functional use; therefore, the treatment of choice is extraction with prosthetic replacement. A unique case of unilateral regional odontodysplasia with ipsilateral ...
Schneider P E - - 1990
A disturbance during the embryology of tooth formation of the seven-year-old girl presented in this case resulted in her having the unusual combination of nearly a complete complement of primary teeth but anodontia of the permanent dentition. It could not be determined if this child had any of the many ...
Best H A - - 1990
Complete mandibular dentures have a significantly lower success rate compared with complete maxillary dentures. Overdentures are feasible alternatives in many instances in attempting to achieve an optimal clinical result. The case of a 56-year-old female patient requiring prosthetic rehabilitation is discussed. A complete maxillary denture and a complete mandibular overdenture ...
Bowden D E - - 1990
Orthodontic treatment decisions when maxillary central incisors are absent or are of poor prognosis, are discussed. Autotransplantation of mandibular first premolars to the incisor region is suggested as an approach in selected cases. The literature is reviewed, surgical technique described and case selection summarized. Cases are reported where autotransplantation of ...
Bramante M A - - 1990
Three controversial interrelated aspects of orthodontics have been reviewed: retention, the effect of third molars on lower anterior crowding, and extraction and nonextraction orthodontic treatment. Recent studies have shown that unacceptable lower anterior crowding occurs in 90 per cent of well-treated extraction cases. The implication is that nonextraction cases should ...
Loh F C - - 1990
This report brings the total number of bifid mandibular condyles reported so far in the English-language literature to 15 cases. In addition, one dried specimen with two distinct condylar heads is reported. This rare anomaly does not appear to have a predilection for any particular race or either gender. At ...
Wallace M L - - 1990
A case of myospherulosis, a condition first reported in 1969, is reported following the extraction of mandibular third molars and subsequent placement of Terra-Cortril and Gelfoam into the extraction sites. The lesions were discovered during a periodontal surgical procedure and to the best of our knowledge this is the first ...
McCormick S U - - 1989
Bilateral bifid mandibular condyles are a rare anomaly that had previously been described only by Hrdlicka in material from skull collections. We present here three cases of bilateral bifid mandibular condyles in patients who sought treatment for other reasons. The radiographic appearance of this anomaly and its embryology are discussed.
Postlethwaite K R - - 1989
An unusual case of multiple idiopathic root resorption involving all of the maxillary and mandibular incisor, canine, and premolar teeth is presented. A review of the literature reveals that this case is unusual in that, although other cases of multiple idiopathic root resorption have been described, the site of the ...
Machtou P - - 1989
Removing posts from root canals prior to endodontic retreatment is often a challenge. The Gonon post removing system (Thomas Extracteur De Pivots; FFDM-Pneumat, Bourges, France) is safe and efficient and can be used for anterior, bicuspid, and even molar teeth. The Gonon system is illustrated with one clinical case.
Mehta D S - - 1989
The presence of dens evaginatus has not been reported previously in the Indian race. The condition affects the premolars most commonly, and is rarely reported in molars, canines, or incisors. The involvement of a supernumerary (mesiodens) tooth with a traumatic aetiology is a rare finding. The treatment included the extraction ...
Woon K C - - 1989
Changes in the mandibular arch were evaluated in 32 cases of lower first premolar extraction without appliance therapy. There was a mean reduction in the irregularity index and extraction space of 52 percent and 45 percent respectively. Intercanine distance increased in 65 percent of the cases whilst intermolar distance decreased ...
To E W - - 1989
A case of bilateral temporo-mandibular joint (TMJ) ankylosis with a bifid mandibular condyle is reported. The patient had a history of trauma 39 years previously. The right condyle was mushroom-shaped and the left condyle was bifid. The treatment of ankylosis is briefly discussed and the literature on bifid condyles is ...
Shultz R E - - 1989
A case of bilateral coronoid hyperplasia is presented. This is a developmental abnormality that occurs primarily in males and is characterized by progressive, asymptomatic limitation of mandibular movements. The condition is usually detected shortly after the age of puberty. A diagnosis is usually made on the basis of the history ...
Lew K K - - 1989
Two cases are presented where the maxillary second molars were just erupting. The first was a Chinese boy of 8 years 2 months and the other, a Chinese boy of 17 years 4 months. These extremes in eruption time are unusual and do not appear to have been reported in ...
Snyder D E - - 1989
A case report is presented of an Angle Class I dental malocclusion, significant bimaxillary dentoalveolar protrusion, anterior open bite, and spacing of the maxillary and mandibular incisors. [This case was presented to the American Board of Orthodontics in partial fulfillment of the requirements for the certification process conducted by the ...
Gellin M E - - 1989
An unerupted mandibular second primary molar first was observed in a healthy male 3 years, 4 months of age. The report presents the rationale to allow the first permanent molar to erupt fully. The treatment objectives are presented with the description of the fixed appliances used to accomplish the objectives.
Chen C H - - 1989
Both the occurrence of gigantiform cementoma in the jaws or multiple unerupted teeth are very rare conditions. The purpose of this paper is to report on a case of a combination of these two conditions and to review relevant literature. A 47-year-old dwarfish male was referred to our Oral and ...
Crawford P J - - 1989
Regional odontodysplasia is a localized disorder of tissues of dental origin resulting in characteristically bizarre clinical and radiographic appearances. It most commonly affects the maxillary anterior teeth of both the permanent and primary dentitions. The authors present a worldwide bibliography of reported cases and discuss the suggested theories regarding the ...
Lew K K - - 1989
The tooth positioner is a one-piece, resilient appliance which may be used for finishing orthodontic cases. The appliance fills the free-way space, and covers the clinical crowns of all the teeth and about 3-mm of the buccal and lingual gingival mucosa. The positioner is constructed over a predetermined 'set-up' and ...
Chenail B L - - 1989
Reports of the success rate in endodontics range from 70 to 97 per cent. Success rates for ultrasonic endodontics have not been documented. In this survey, endosonically treated cases were reviewed after eight to 33 months and assessed clinically and radiographically. This revealed that endosonic treatment was successful in 93 ...
Jacobs S G - - 1989
A case report describing an ankylosed permanent maxillary canine which was brought into the arch by a combination of surgery and orthodontics is used as a basis to review the literature concerning many aspects of the management of ankylosed permanent teeth. The literature indicates surgical luxation is a two edged ...
Rubenstein L - - 1989
This is a case report of an ectopically impacted, mandibular left second premolar. Radiographically the tooth was observed to have a large radiolucency in the crown. The surgical, orthodontic and restorative management of the case is presented with a brief literature review. The histological report substantiated the previous literature by ...
Shapira Y - - 1989
This paper defines tooth transposition and discusses its history, incidence and possible etiology. An interesting parallel is drawn between tooth transposition and other dental anomalies (number, size, shape and location of teeth). Treatment options are discussed in terms of the age at which the transposition is discovered, as well as ...
Ericson S - - 1988
Factors predisposing to resorption of adjacent permanent lateral incisors caused by ectopic eruption of maxillary canines were evaluated. The subjects consisted of two groups: one with 40 lateral incisors with resorption caused by ectopic eruption and a control group of 118 ectopic eruption cases with no lateral incisor resorption. The ...
Harris E F - - 1988
Attainment of a Class I molar relationship (Angle) is often a prime treatment objective. In addition to considerations of improved function and skeletodental harmonies, a Class I relationship often is deemed the "correct" and stable situation. This study assessed the relative stability of the sagittal molar relationship in orthodontically untreated ...
Takeda Y - - 1988
A case of osseous hyperplasia under the pontics of fixed partial dentures in right and left mandibular first molar regions is presented. Radiographs showed hemispherical radio-opacities on the alveolar ridges. Histologic examination revealed the lesions were composed of a dense mass of mature bone with well-developed lamellae and haversian systems, ...
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