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At least 19 recordsLinked to original sources

The maxillary cuspid and missing lateral incisors: esthetics and occlusion.

When maxillary cuspids are moved mesially or if they are absent, it may be safe to assume: 1. There is no apparent change in facial contour. 2. The first premolar can serve as an adequate substitute for the cuspid, both functionally and esthetically. 3. If all spaces are closed, occlusal equilibration will usually be necessary to effect acceptable posterior occlusion. Mesiodistal contouring of the cuspids probably accentuates the problem since it seems to exaggerate any tooth size discrepancy which may exist between maxillary and mandibular teeth. 4. Unilateral space closure displays functional deficiencies more frequently on the side of closure. 5. Varying degrees of shade imbalance between the cuspid and central incisor can be expected, and the degree of contrast can be accurately predicted by using the mandibular cuspid as a guide. This is particularly important when the maxillary canines are impacted or unerupted.

Adolescent

[The impacted upper cuspid].

Impacted upper cuspids may give rise to problems, such as the formation of cysts and the resorption of adjacent teeth. Early diagnosis (before the age of 12) is important. Proper timing of extraction of the deciduous cuspid may lead to spontaneous correction. When the position of the cuspid is unclear, orthopantomography and a lateral skull film may be helpful. Palatally impacted cuspids should be exposed surgically and moved into position by orthodontic treatment. Labially impacted cuspids are exposed by relocation of an attached gingival flap. The experience of the authors with the treatment of 81 patients are reported.

Adolescent

[Cuspid protection and muscular reaction].

In an epidemiological study we found bilateral cuspid guidance in only 4, and unilateral cuspid guidance in 3 patients out of 247 patients examined. This suggest that cuspid guidance is a rare form of articulation. In the experimental part of this study the electric activity of the masseter and anterior temporal muscles was measured during empty mastication before and after the canines were treated with build-ups in a patient group with muscular and TMJ problems and matched against the results obtained in a control group of 10 healthy probands. Apart from the mean muscle activity also the path of excursion was recorded. Both values were combined in activity/path diagrams providing information on the muscular response to different forms of occlusion. Existing balancing contacts in mediotrusion, for instance, may produce high activities. With cuspid build-ups allowing correct cuspid guidance the patients with muscular and TMJ problems were symptom-free after just three days. After approx. one year the patients and the probands were recalled for a follow-up check. These and other results are discussed.

Cuspid

Early eruption and advanced root development of the permanent cuspids in a six-year-old boy.

A case report showing the eruption of the left maxillary and mandibular permanent cuspids in a six-year-old boy, is presented. In addition, the dental age of all the permanent cuspids as seen by the eruption and tooth development suggested that the cuspids are comparable to those seen in a 13 to 14 year-old-boy. A search of the literature has not revealed any such reports.

Age Factors

Traumatic avulsion of the mandibular right primary lateral incisor and cuspid.

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 with a spur was fabricated to maintain space and prevent movement of the mandibular incisors. Sequelae of premature loss of primary teeth is presented.

Child, Preschool

A very large maxillary cuspid.

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.

Adult

Results of surgical exposure of impacted cuspids and bicuspids in relation to patients' somatic and dental maturation.

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.

Adolescent

Back from the cuspid.

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.

Adolescent

[The silver amalgam cavity related to the cuspid-CSA angle].

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.

Dental Amalgam

[Recent comparative statistical correlation studies on predicting the space requirement of the cuspid and bicuspid region using multiple regression comparisons].

The purpose of the investigation was to develop multiple regression equations to calculate the space requirements in the canine and premolar regions. The investigation was based on study models from a group of 63 (36 males and 27 females) patients with an ideal Angle class I occlusion. The mesiodistal width of unerupted incisors and the buccolingual and mesiodistal width of first molars were used as independent variables. A test group of 64 study models (32 males and 32 females) from orthodontically treated patients was used to represent the malocclusions typically present in an orthodontic clinic or practice. The space requirement can be predicted from three variables in both upper and lower jaws. The inclusion of more variables does not significantly improve the prediction. The correlation coefficient for the buccolingual width of the first lower molar was significantly higher than that for the mesiodistal width. The combination of 22, 32 and 36 (buccolingual) achieved the highest correlation coefficient in both groups. Further, if at the time of analyses, one of the canines or premolars (33, 34 or 24) has erupted their width may be included as an additional independent variable. The correlation and regression coefficients for males and females showed no significant difference.

Bicuspid