SEARCH · Search PubMed
Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
A retrospective radiographic search was made for nutrient canals situated immediately inferior to the incisal tip of the unerupted permanent maxillary cuspid. In this study, the structure was observed radiographically in 35.4% of the children between the ages of 6 and 10 years, with an apparently greater incidence among girls.
This brief report describes an extracted maxillary permanent cuspid tooth that is longer than any previously reported human tooth. This tooth was removed from a patient of short stature.
The aim of the study was to correlate the rate of postoperative eruption of impacted teeth after surgical exposure to the patient?S' SOMATIC AND DENTAL DEVELOPMENT. THIS RELATIONSHIP WAS ANALYZED IN 31 PATIENTW WITH IMPACTED CUSPIDS OR BICUSPIDS, 12 OF WHOM WERE OVER 25 AND 19 UNDER 21 YEARS OF AGE. Surgical uncovering of the impacted teeth was carried out and the degree of subsequent eruption was evaluated 4 months after the operation. On uncovering the crown was exposed as far as the cementoenamel juction and the surrounding bone was covered with mucous membrane. Dental age and growth rate were used as variables describing individual somatic and dental maturation. After surgical uncovering eruption took place in all but one tooth. Eruption was quicker and more complete in children who were still growing than in young adults. The eruption process was also more favorable in dentitions still under formation than in cases with completed dental development. Early intervention and total surgical uncovering of the crown are advocated in cases of impacted teeth.
Distal tipping forces were applied to the maxillary cuspid teeth of five domestic cats. Surgical elimination of the gingival attachment of one tooth in each cat resulted in greater distal crown movement and a shift of the center of rotation toward the root apex.
Denture reduction in formal orthodontic treatment does not appear to prevent the impaction of lower third molars. The extraction of premolar teeth is best carried out as close as possible to the eruption time of the cuspids. The posterior part of the mandibular arch should be evaluated by the study of lateral oblique roentgenograms and one of several options regarding treatment should then be adopted.
A case involving the presence of supernumerary cuspids and bicuspids is described. The condition was probably an inherited one because of the family history and the bilateral incidence. The supernumerary teeth erupted because of alveolar resorption in which inflammatory factors probably played a role. Radiographic follow-up of the site of supernumerary impacted teeth and alveolar resorption should be undertaken.
The Effect on the subgingival microflora of a single topical administration of a 95% collagen and 5% metronidazole device in combination with debridement was investigated in 30 adult periodontitis patients in comparison with mechanical treatment alone. For each patient, plaque samples from test and control sites in cuspids and bicuspids were collected for culture and enumeration of total anaerobically cultivable bacteria (TA), black-pigmented anaerobes (BPA), and Actinobacillus actinomycetemcomitans (Aa). Spirochetes and fusiforms were quantified by direct microscopic examination after Giemsa staining. A decrease was observed for all parameters, and a significant difference in comparison with the control group was found for fusiforms. After treatment, a lower number of Aa positive sites were observed in the test group (13/25). These results show that a single application of topical metronidazole seems to be effective as adjunctive antimicrobial treatment in adult periodontitis.
BACKGROUND: The purpose of this study was to determine the total root surface area of extracted teeth by computerized image analysis and the amount of remaining attachment area assuming various amounts of bone loss due to periodontal disease. METHODS: One hundred fifty extracted mandibular teeth were evaluated, and measured from cusp tip to the cemento-enamel junction (CEJ), CEJ to root apex, and cusp tip to root apex. The fulcrum point of the tooth was also measured, along with the total root surface area of attachment and total surface area of attachment remaining following simulation of attachment loss in 2 mm increments. Measurements were made on 80 teeth on one proximal surface and either the buccal or lingual surface and multiplied by a factor of 2. Measurements on 70 teeth were made on all 4 root surfaces to predict the accuracy of measuring only 2 surfaces to determine root surface area. Images of the tooth surfaces were obtained by video camera and converted to computer image with measurement of the surface areas. RESULTS: The total root surface area for the mandibular cuspids and first and second bicuspids was 275.88 mm2, 251.45 mm2, and 271.81 mm2, respectively. The 2-sided and 4-sided measurements for the mandibular first bicuspid were 252.55 mm2 and 247.02 mm2, respectively (P>0.05). CONCLUSIONS: This study found the total root surface area to be greater than that in most previous studies. Increasing attachment loss is related to decreasing root surface area; however, this relationship is not directly proportional. No statistical difference was found between measuring 4 surfaces versus only 2 surfaces.
Impaction of primary teeth is very rare especially in the maxillary anterior teeth. A four-year-old male child with the complaint of delayed eruption of right maxillary primary cuspid due to the presence of odontoma is presented.
Attention is paid to the normal and disturbed eruption of the upper cuspid. Genetic factors seem to play the most important role in impaction or delayed eruption. The dentist needs to be aware of the diagnostic and roentgenological features of this phenomenon.
Treatment goal of the maxillary impacted cuspid should include health periodontal end results. This clinical and radiographic study reveals in 75% of the cases a satisfying periodontal condition.
A review of radiological diagnostic aids for maxillary impacted cuspid is presented.
Proper diagnosis, surgical management and application of biomechanics have paramount clinical significance in order to prevent potential mucogingival problems and to ensure the outcome of treatment in cuspid impaction cases.
Transmigration of impacted mandibular cuspid to the opposite side seems unhypothetical due to the presence of symphyseal cartilage. Two such rare cases of extreme transmigration were radiographically discovered when patient reported for orthodontic therapy.
The patient presented with constriction of both arches, moderate crowding and an unerupted and impacted maxillary cuspid. The Crozat appliance therapy efficiently developed the arches, reduced skeletal asymmetry on the sagittal plane, and distalized the upper left posteriors although this was aided by the removal of the second molar. Alignment and the development of a good functional occlusion was accomplished efficiently with the straight wire appliance. Facial balance and good lip support was maintained. No stripping was present and the periodontal health remains excellent. A significant improvement was made in the patient's smile. The teeth have been stabler during the two-year period following the initial placement of retainers. And the patient is very pleased with the treatment results.
We weighed each cusp separately in 260 operatively excised stenotic 3-cuspid aortic valves. All 3 cusps differed (by > 0.1 g) in weight in 69 patients (26%); all 3 cusps were similar (a < or = 0.1 g difference) in weight in 33 patients (13%); and 1 cusp differed from either of the other 2 cusps, which were similar in weight, in 158 patients (61%). The weight differences appeared to be caused by differing quantities of calcium on the aortic surfaces of the cusps.
A case of several developing supernumerary teeth is reported. A seven-year-old African-American boy presented with retained primary maxillary central incisors, two impacted mesiodens, and unerupted permanent maxillary central incisors. A dentigerous cyst was removed at the time of surgical removal of the mesiodens. Approximately fourteen months post-extraction, a new panoramic radiograph showed the presence of six previously unidentified developing and unerupted supernumerary teeth, one on each of the maxillary cuspid areas and two on the mandibular premolar regions bilaterally. Practitioners should be aware that supernumerary teeth may develop late. Thus, periodic reevaluation with appropriate radiographs is indicated, especially in patients who have presented with supernumerary teeth.
The AA. evaluated the cusps sides inclination variability of about 1,000 subjects. From the data it has been observed a greater vestibular sides inclination (between 38 degrees and 41 degrees) compared to lingual's (between 29 degrees and 32 degrees). For this the AA. suggest the need of some cavity modifications for improving the CSA/AMA ratio during the conservative procedures only when cuspidal sides are more binded.