ABSTRACT
This retrospective study reports the radiographic prevalence of embedded primary molar roots within Saudi adult dentulous patients. Embedded roots of primary molars were viewed radiographically by evaluation of the records of 300 patients. Embedded primary molar roots were detected in 7 percent of the viewed patient radiographs. Fifty-five percent of the embedded roots demonstrated the concomitant existence of partial bony ankylosis. The remaining 45 percent of the embedded roots were surrounded by an intact lamina dura and periodontal ligament space. The frequency of occurrence demonstrated an age-based relationship, showing 9 percent prevalence in the older age-group (41-50 yr.) as compared to a 45 percent occurrence seen in the younger (15-20 yr.) group. Seventy-seven percent of the embedded roots were found within the mandible as compared with a 23 percent occurrence in the maxilla.
Subject(s)
Molar/diagnostic imaging , Tooth Root/diagnostic imaging , Tooth, Deciduous/diagnostic imaging , Tooth, Impacted/diagnostic imaging , Adolescent , Adult , Age Factors , Alveolar Process/diagnostic imaging , Ankylosis/diagnostic imaging , Ankylosis/epidemiology , Female , Humans , Male , Mandible/diagnostic imaging , Maxilla/diagnostic imaging , Middle Aged , Periodontal Ligament/diagnostic imaging , Prevalence , Radiography , Retrospective Studies , Saudi Arabia/epidemiology , Tooth Diseases/diagnostic imaging , Tooth Diseases/epidemiology , Tooth, Impacted/epidemiologyABSTRACT
Mastication, comfort, and speech were determined and compared for patients using conventional complete dentures and dentures made with the neutral zone concept.
Subject(s)
Denture Design , Denture, Complete , Mastication/physiology , Speech/physiology , Arachis , Consumer Behavior , Dental Occlusion , Denture Bases , Humans , Jaw Relation Record , Tooth, ArtificialABSTRACT
The prevalence of maxillary incisor shoveling was studied radiographically in 990 Saudi patients. According to the radiomorphologic characteristics, a new classification was developed and shovel teeth were categorized. The findings of this study showed 9% shovel-shaped incisors; among those, 4% were central incisors and 5% were lateral incisors. Frequency of dens invaginatus occurrence with the shovel-shaped incisors was also investigated. Eight percent of shovel-shaped incisors showed presence of dens invaginatus. Prevalence was found to be 4% in central shovel-shaped incisors, whereas that in lateral shovel-shaped incisors was 11%.
Subject(s)
Incisor/abnormalities , Tooth Abnormalities/epidemiology , Adolescent , Adult , Aged , Asian People , Dens in Dente/diagnostic imaging , Dens in Dente/epidemiology , Female , Humans , Incisor/diagnostic imaging , Male , Maxilla , Middle Aged , Prevalence , Radiography , Saudi Arabia/epidemiology , Tooth Abnormalities/diagnostic imaging , Tooth Abnormalities/genetics , White PeopleABSTRACT
Shovelling of the incisors is considered to be a polygenic inheritable trait. Shovelling differs considerably between groups of racial populations but is relatively stable within each group. Presence or absence of shovelling helps in racial identification and in exploration of ancestry. Periapical radiographs of patients of several nationalities from Asian and African continents were obtained. Shovelling and invaginations associated with the shovel-shaped incisors was studied according to nationality. Results indicated that the incidence of shovelling in Syrians, Jordanians, Palestinians and Filipinos was 5-6 per cent. In Saudi Arabians, Pakistanis and Indians, the incidence of shovelling was 10-12 per cent. Among Yemenis, Sudanese and Egyptians, the incidence of shovelling was 20-25 percent. The occurrence of invaginations in shovel-shaped incisors was 11 per cent.
