-
Scandinavian Journal of Dental Research Oct 1980Teeth and jaws excavated from three burial cairns on the island of Umm an-Nar outside Abu Dhabi were examined. Dating: 2500 B.C. The number of individuals buried was...
Teeth and jaws excavated from three burial cairns on the island of Umm an-Nar outside Abu Dhabi were examined. Dating: 2500 B.C. The number of individuals buried was estimated from the dentitions. In spite of the bad condition of the sparse material an attempt was made to give an impression of non-metric and metric traits of the teeth. The teeth showed Caucasoid but no Mongoloid traits. They were small, worn at an early age, with abundant calculus, multiple fractures but no carious lesions. The percentages of agenesis of third molars in the three graves were equal. Alveoloclasia appeared frequently. The population would seem to be hunters and fishermen rather than agriculturists.
Topics: Adolescent; Adult; Arabia; Child; Dentition; Female; History, Ancient; Humans; Jaw Diseases; Male; Paleodontology; Tooth Diseases
PubMed: 7008177
DOI: 10.1111/j.1600-0722.1980.tb01239.x -
The Journal of Prosthetic Dentistry Jul 1976The construction of an interim overdenture using existing removable partial dentures with natural tooth crowns and artificial teeth can be a simple and economical method...
The construction of an interim overdenture using existing removable partial dentures with natural tooth crowns and artificial teeth can be a simple and economical method of providing patients with dentures while tissues heal and teeth are prepared and restored. A more definite prognosis for both the patient and his remaining dentition can be established before the final overdenture is completed. The procedures necessary to provide three types of interim overdentures have been outlined. Patients tolerate this method of changing their dentitions extremely well.
Topics: Denture Design; Denture, Complete, Immediate; Denture, Overlay; Denture, Partial, Removable; Humans; Tooth; Tooth, Artificial
PubMed: 787499
DOI: 10.1016/0022-3913(76)90227-4 -
Journal of Dentistry For Children... Jan 2023Regional odontodysplasia (ROD) is a rare developmental anomaly with distinctive clinical, radiographical and histological findings, affecting both primary and permanent...
Regional odontodysplasia (ROD) is a rare developmental anomaly with distinctive clinical, radiographical and histological findings, affecting both primary and permanent dentitions. The teeth with ROD have an atypical morphology and are usually discolored, with either delayed eruption or complete failure to erupt. Radiographically, the affected teeth have a "ghostly" appearance, with marked radiolucency and decreased radiodensity, showing a thin outline of enamel and dentin, which appear hypomineralized histologically, with poorly structured dentinal tubules and enamel prisms. Calcifications are frequently found in the pulp chambers of the affected teeth. This case report discusses a three-year-old girl who presented with ROD in her mandible as well as the clinical and radiographical features, and treatment of the condition.
Topics: Humans; Female; Child, Preschool; Odontodysplasia; Dentition, Permanent; Tooth, Deciduous; Dental Enamel; Mandible
PubMed: 37106528
DOI: No ID Found -
European Archives of Paediatric... Apr 2013To determine the changes in the molar and canine relationships in transition from the primary to the mixed dentition in 98 subjects selected among Turkish children...
AIM
To determine the changes in the molar and canine relationships in transition from the primary to the mixed dentition in 98 subjects selected among Turkish children living in the Erzurum city centre.
METHODS
This study is based on a 3-year follow-up of 98 children (46 girls, 52 boys) between the ages of 4 and 6 years at the start of the study. The survey focused on the investigation of the changes that appeared in the occlusal relationships in the primary dentition and in the transition to the mixed dentition according to gender and age.
RESULTS
The findings indicated that 73.6 % of the 98 cases evaluated in the primary dentition developed a Class I molar relationship, and 26.4 % developed a Class II molar relationship. As 64.3 % FTP, 22.4 % DS, and 13.3 % MS molar occlusal relationships were evaluated at baseline; 22.4 % FTP, 11.2 % DS, and 66.3 % MS molar occlusal relationships were evaluated at the end of the third year. While 75.5 % Class I, 11.2 % Class II, and 13.3 % Class III primary canine occlusal relationships were evaluated at baseline; 53.1 % Class I, 5.1 % Class II, and 41.8 % Class III primary canine occlusal relationships were evaluated at the end of the third year. With increased age, a statistically significant difference (p < 0.001) was found in flush terminal plane, mesial step, and primary canine occlusal relationships and no statistically significant difference (p > 0.05) was found in distal step relationships.
CONCLUSION
Malocclusions observed in the primary dentition are signs of malocclusions in the permanent dentition.
Topics: Child; Dentition, Mixed; Dentition, Permanent; Humans; Malocclusion; Molar; Tooth, Deciduous
PubMed: 23553007
DOI: 10.1007/s40368-013-0014-y -
American Journal of Orthodontics and... Jun 2016Palatal expansion has been a popular and proven technique for transverse discrepancies used in orthodontics for decades. The short-term effectiveness of the technique is... (Comparative Study)
Comparative Study
INTRODUCTION
Palatal expansion has been a popular and proven technique for transverse discrepancies used in orthodontics for decades. The short-term effectiveness of the technique is understood, yet questions remain regarding the long-term stability, with much debate surrounding the optimum treatment timing to initiate expansion for the most beneficial and stable results, especially with regard to mixed dentition treatment. The purpose of this study was to determine the long-term stability of palatal expansion performed in the mixed dentition vs the permanent dentition.
METHODS
Fifty-four subjects were grouped as follows: 24 in the mixed dentition and 30 in the permanent dentition at the start of treatment. All patients had been treated with the Haas type of palatal expansion appliance followed by nonextraction fixed edgewise mechanics. Digitized dental casts were evaluated at 3 times: before treatment (T1), after treatment (T2), and at the long-term retention (T3). Intermolar widths were computed by subtracting measurements between time points, and comparisons between the groups were made to determine expansion and stability differences.
RESULTS
Significant intermolar width increases were observed from T1 to T2 with significant relapses from T2 to T3, and an overall net gain remained at T3 in each group. No significant differences were found for relapse between the mixed and permanent dentitions.
CONCLUSIONS
There are no differences for the long-term intermolar width stability in patients treated with palatal expansion in the mixed dentition vs the permanent dentition.
Topics: Adolescent; Dentition, Mixed; Dentition, Permanent; Humans; Molar; Palatal Expansion Technique; Time Factors; Treatment Outcome
PubMed: 27241996
DOI: 10.1016/j.ajodo.2015.11.027 -
Compendium of Continuing Education in... Apr 2019Adult patients with class II division 2 malocclusion often present with several occlusal problems. Employing a singular restorative modality to fix the problems without...
Adult patients with class II division 2 malocclusion often present with several occlusal problems. Employing a singular restorative modality to fix the problems without considering the long-term prognosis can lead to disastrous outcomes. Oral rehabilitation in such mutilated dentitions is challenging and requires a holistic diagnostic approach to achieve long-term stability and a good prognosis. Systematic risk assessment of periodontal, biomechanical, functional, and dentofacial aspects can help identify the potential difficulties that may be encountered in treatment execution. An interdisciplinary approach with judicious use of orthodontics can significantly help reduce the risks. This article presents such an approach to functional occlusal rehabilitation of a mutilated adult dentition caused by a constricted chewing pathway. Cephalometric parameters were utilized to guide the overall treatment and were drastically improved at the completion of the treatment, in which restorative principles were strictly adhered to. The stable esthetic and functional rehabilitation at the 6-year follow-up highlights the importance of comprehensive treatment planning to achieve favorable clinical outcomes in cases requiring complicated oral rehabilitation.
Topics: Adult; Dentition, Permanent; Esthetics, Dental; Follow-Up Studies; Humans; Mastication; Orthodontics, Corrective
PubMed: 30938537
DOI: No ID Found -
American Journal of Orthodontics and... Aug 2022
Topics: Dental Enamel; Dentition, Permanent; Humans; Tooth, Deciduous
PubMed: 35933148
DOI: 10.1016/j.ajodo.2022.04.009 -
PloS One 2015Shark and ray (elasmobranch) dentitions are well known for their multiple generations of teeth, with isolated teeth being common in the fossil record. However, how the...
Shark and ray (elasmobranch) dentitions are well known for their multiple generations of teeth, with isolated teeth being common in the fossil record. However, how the diverse dentitions characteristic of elasmobranchs form is still poorly understood. Data on the development and maintenance of the dental patterning in this major vertebrate group will allow comparisons to other morphologically diverse taxa, including the bony fishes, in order to identify shared pattern characters for the vertebrate dentition as a whole. Data is especially lacking from the Batoidea (skates and rays), hence our objective is to compile data on embryonic and adult batoid tooth development contributing to ordering of the dentition, from cleared and stained specimens and micro-CT scans, with 3D rendered models. We selected species (adult and embryonic) spanning phylogenetically significant batoid clades, such that our observations may raise questions about relationships within the batoids, particularly with respect to current molecular-based analyses. We include developmental data from embryos of recent model organisms Leucoraja erinacea and Raja clavata to evaluate the earliest establishment of the dentition. Characters of the batoid dentition investigated include alternate addition of teeth as offset successional tooth rows (versus single separate files), presence of a symphyseal initiator region (symphyseal tooth present, or absent, but with two parasymphyseal teeth) and a restriction to tooth addition along each jaw reducing the number of tooth families, relative to addition of successor teeth within each family. Our ultimate aim is to understand the shared characters of the batoids, and whether or not these dental characters are shared more broadly within elasmobranchs, by comparing these to dentitions in shark outgroups. These developmental morphological analyses will provide a solid basis to better understand dental evolution in these important vertebrate groups as well as the general plesiomorphic vertebrate dental condition.
Topics: Animals; Biological Evolution; Dentition; Fossils; Models, Anatomic; Phylogeny; Sharks; Skates, Fish; Species Specificity; Tooth; Tooth Crown; Tooth Root; Vertebrates
PubMed: 25874547
DOI: 10.1371/journal.pone.0122553 -
The New York State Dental Journal Nov 2015The occlusal characteristics of the primary dentition of 130 children 3 to 6 years old were examined. Variables were the terminal plane relationship, primary canine...
The occlusal characteristics of the primary dentition of 130 children 3 to 6 years old were examined. Variables were the terminal plane relationship, primary canine occlusion, spacing, overjet and overbite relationships. The flush terminal plane was the most common finding. A Class I relationship of the primary canine occurred in 85% of the subjects. Spaced dentitions occurred 81% of the time, while the presence of primate spaces occurred in at least one of the four quadrants. The overjet relationship varied from +1 mm to 4 mm in all subjects, and the majority of children were considered to have a normal overbite.
Topics: Asian; Child; Child, Preschool; Cuspid; Dental Occlusion; Dental Occlusion, Centric; Diastema; Female; Humans; Incisor; Male; Molar; New York; Overbite; Tooth, Deciduous; White People
PubMed: 26749782
DOI: No ID Found -
Hua Xi Kou Qiang Yi Xue Za Zhi = Huaxi... Aug 2016To evaluate the clinical effectiveness of tooth-alveolar bone grafts in repairing dentition defects.
OBJECTIVE
To evaluate the clinical effectiveness of tooth-alveolar bone grafts in repairing dentition defects.
METHODS
Forty-five patients with dentition defect were divided into two groups according to different operation methods. In group A (n=24), the tooth-alveolar bone grafts of the transplanted tooth and its surrounding alveolar bone were cut using modified surgical orthodontics and then embedded into the designated planting hole. In group B (n=21), the teeth were extracted through conventional tooth transplantation and then embedded into the prepared planting holes. The transplanted teeth were fixed for about 4-6 weeks using the orthodontic method. During the postoperation, which lasted for 2-12 weeks, root canal treatments were administered selectively. The medical effect was regularly followed up and evaluated.
RESULTS
No significant difference was found in the change of color and the periodontal ligament image between the two groups (P>0.05) whereas significant differences were observed in the degree of tooth mobility, the absorption of root and alveolar bone, and the rate of root canal treatment (P<0.05). The curative effect in group A was superior to group B.
CONCLUSIONS
Tooth-alveolar bone graft transplantation has overcome some of the limitations of traditional tooth transplantation. Therefore, it is an effective means of repairing dentition defect.
Topics: Alveolar Bone Grafting; Dentition; Humans; Periodontal Ligament; Tooth; Tooth Root
PubMed: 28317353
DOI: 10.7518/hxkq.2016.04.009