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1.
Article in English | MEDLINE | ID: mdl-10225635

ABSTRACT

OBJECTIVE: The purpose of this study was to compare endodontically versus nonendodontically treated teeth with respect to clinical features, including patient age and gender and tooth types of vertical root fractures. STUDY DESIGN: A total of 315 consecutive cases of vertical root fracture occurring in 274 Chinese patients during a 1 3-year period were reviewed. Age and gender, as well as tooth type and root distribution of vertical root fractures, were presented and compared in endodontically versus nonendodontically treated teeth. RESULTS: Most patients (87%) had 1 fractured tooth; the others had 2 or 3 fractured teeth. Of all vertical root fractures, 40% occurred in nonendodontically treated teeth. In comparison with those in endodontically treated teeth, vertical root fractures in nonendodontically treated teeth tended to occur in patients with a higher mean age (55 years vs. 51 years) and were more frequent in male patients (78% vs. 58%). Vertical root fractures occurred in nonendodontically treated teeth more often in molars (84% vs. 53%), less often in premolars (16% vs. 33%), and seldom in anteriors (1 tooth vs. 27 teeth). CONCLUSIONS: Vertical root fractures in nonendodontically treated teeth are not uncommon and comprise a large proportion of such fractures in Chinese patients. Differences between endodontically and nonendodontically treated teeth in patient age and gender, as well as in tooth types of vertical root fractures, were demonstrated.


Subject(s)
Tooth Fractures/epidemiology , Tooth Root/injuries , Adult , Age Distribution , Aged , Aged, 80 and over , Bicuspid/injuries , China/ethnology , Female , Humans , Incidence , Male , Middle Aged , Molar/injuries , Sex Distribution , Sex Ratio , Taiwan/epidemiology , Tooth Fractures/ethnology , Tooth Fractures/etiology , Tooth, Nonvital/complications
2.
J Endod ; 24(10): 678-81, 1998 Oct.
Article in English | MEDLINE | ID: mdl-10023252

ABSTRACT

Vertical root fractures (VRFs) in teeth without endodontic treatment are uncommon. A clinical study was done on 64 cases of VRFs in 61 Chinese patients to define better the clinical characteristics, diagnostic signs, and possible causes. Results showed that fractures occurred most often in first molars of patients between 40 and 69 yr of age, and the incidence was two times higher in males than in females. Flat roots with smaller mesiodistal diameters were more prone to fracture. The majority (79%) of patients had intact dentition with less than four teeth missing. Fractured teeth were frequently attrited with no restorations. VRFs may result from excessive or repetitive masticatory force due to damaging chewing habits exerted on flat roots of smaller mesiodistal diameter. Nonendodontic VRFs seem to occur more frequently than earlier believed and may represent an underdiagnosed clinical entity deserving of our attention.


Subject(s)
Tooth Fractures , Tooth Root/injuries , Adult , Age Distribution , Aged , Aged, 80 and over , Bicuspid/injuries , Bite Force , China/epidemiology , Female , Humans , Male , Middle Aged , Molar/injuries , Retrospective Studies , Root Canal Therapy , Sex Distribution , Tooth Fractures/epidemiology , Tooth Fractures/ethnology , Tooth Fractures/etiology , Tooth Fractures/physiopathology
3.
ASDC J Dent Child ; 62(5): 353-5, 1995.
Article in English | MEDLINE | ID: mdl-8550926

ABSTRACT

Little new evidence on the prevalence of injury to the anterior teeth of children has been reported in the past five years and, in South Africa, trauma to the teeth of children in different ethnic groups has not been compared respectively. The purpose of this investigation was to determine the prevalence of dental trauma using well-defined criteria and to sample a specific age-group. Five regions were chosen and 1035 children in the eleven-year age-group were examined. No statistical significance was found between the ethnic groups related to the amount of injury sustained. For all groups, boys received more injuries than girls. The most common injury was fracture of the enamel of the maxillary central incisor. With 15 percent of the children receiving some level of trauma by age eleven years, this is one of the main dental treatment needs for South African children.


Subject(s)
Incisor/injuries , Black People , Child , Cross-Sectional Studies , Dental Enamel/injuries , Ethnicity , Europe/ethnology , Female , Humans , India/ethnology , Malaysia/ethnology , Male , Maxilla , Prevalence , Rural Health/statistics & numerical data , Sex Factors , South Africa/epidemiology , Tooth Fractures/epidemiology , Tooth Fractures/ethnology , Tooth Injuries/epidemiology , Tooth Injuries/ethnology , Urban Health/statistics & numerical data , White People
4.
J Endod ; 21(6): 337-9, 1995 Jun.
Article in English | MEDLINE | ID: mdl-7673845

ABSTRACT

Vertical root fractures have been reported to occur primarily in endodontically treated teeth due to condensation forces and/or with post placement. This study describes 11 Chinese patients with 12 molars that developed vertical root fractures without endodontic or post procedures. These showed characteristics of a true vertical root fracture as confirmed after extraction. Fractured teeth showed a consistent pattern. The majority were severely attrited mandibular molars in males. All had clinically intact crowns with no or minimal restorations.


Subject(s)
Molar/injuries , Tooth Fractures/ethnology , Tooth Root/injuries , Aged , Asian People , China/epidemiology , Dental Pulp Cavity/pathology , Humans , Male , Middle Aged , Tooth Abrasion/complications , Tooth Fractures/etiology , Tooth Fractures/pathology
5.
J Clin Pediatr Dent ; 18(1): 51-4, 1993.
Article in English | MEDLINE | ID: mdl-8110614

ABSTRACT

493 African-American children between the ages of three and four years were examined for evaluation of molar occlusion with frequency of anterior and posterior crossbite, fractured and/or darkened teeth from trauma and dental anomalies in the primary dentition. Overall results from both age groups revealed 90% had a mesial step, 8% a flush and 2% a distal step molar occlusion. Crossbite, either anterior or posterior, occurred in 12% of all children examined. Posterior crossbite was seen in 7% and anterior crossbite in 5%. Anterior openbite was seen in 8% of the children. Trauma to the primary dentition occurred in 23% of the children, 16% as fractured and 7% as discolored teeth. The most frequently involved teeth were the maxillary primary central incisors. Fused primary teeth were observed in two children. There were no congenitally missing primary teeth and only one supernumerary maxillary primary lateral incisor was observed.


Subject(s)
Black People , Malocclusion/ethnology , Tooth Discoloration/ethnology , Tooth Fractures/ethnology , Black or African American , Child, Preschool , Female , Humans , Male , Tooth Abnormalities/ethnology , Virginia/epidemiology
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