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Table of Contents
January-April 2016
Volume 4 | Issue 1
Page Nos. 1-24
Online since Wednesday, May 25, 2016
Accessed 12,255 times.
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REVIEW ARTICLE
Intricate relations and concepts of reference points in prosthodontics: A literature review
p. 1
Deepti Raghav, Karan Kapoor, Abdullah Ali Alqahtani, Mohammed Zaheer Kola, Fawaz Alqahtani
DOI
:10.4103/2347-4610.182959
Oral rehabilitation presents a variety of clinical situations needing fabrication of prostheses that could satisfy the overall requirement of the patients. In various prosthodontic procedures, exact articulation of the maxillary cast to the articulator necessitates minimum three reference points that could decide the plane to which maxillary cast is mounted. Therefore, the correct choice of reference points in anterior and posterior areas is very crucial failing which one can end up with fabricating intolerable prosthesis. This reference plane is usually created by two points located posterior to the maxillae and one point located anterior to them. In general, the two posterior points are located by measuring prescribed distances from the skin surface landmarks. Literature has well evidenced various anterior and posterior points of reference used for mounting the maxillary cast on the different type of articulator systems. The most common reference plane is the Frankfort plane, which has been assumed to be horizontal when the patient is in the natural head position. However, this relationship is not simply opening or closing, but a complex relationship which exists in three dimensions. Variations may occur in any direction – superoinferior, anteroposterior, or mediolateral. Thus, it is essential to record this relationship with the least possible error to obtain a successful prosthesis.
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ORIGINAL ARTICLES
Dental implants as tooth replacement option among patients in government hospitals Lagos, South-West Nigeria
p. 7
Omotayo Adebola Oremosu, Donna Chioma Umesi, Olabisi Hajarat Oderinu, Sesan A Banjo
DOI
:10.4103/2347-4610.182957
Objective:
To assess awareness of dental implant as a treatment option, among patients requiring replacement of missing teeth in government hospitals in Lagos Nigeria.
Methodology:
This cross-sectional study was carried out among subjects attending dental clinics in government hospitals using an interviewer-administered questionnaire. The structured questionnaire included information on educational background, source of knowledge of implants and willingness to have implants as a treatment option for replacing their missing teeth. The Chi-square test of association was used where appropriate. The difference was taken as significant at an alpha level of
P
< 0.05.
Results:
A total of 425 subjects were surveyed, 49.2% males and 50.8% females, the mean was 35.87 ±14.07) years. Awareness of dental implant was indicated by 20.2% of the participants. Knowledge about implants among those aware showed 36% did not know where implants are placed while 35 (40.7%) were not willing to have implant placements. Cost (48.6%) and fear of surgical procedure (40%) were among reasons given for not wanting implants placement. Dentists formed the major (38.6%) source of information on implants. There was a significant increase in the knowledge of implants with increased level of education (
P
= 0.00).
Conclusion:
Awareness and knowledge about dental implant among the population studied were low. Majority of them displayed incomplete and incorrect information. There is a need for dental education on the merits of implant placement and patients must be able to access accurate information from the dentist and other modes of spreading information.
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An
in vivo
study to compare and correlate sagittal condylar guidance obtained by radiographic and extraoral gothic arch tracing method in edentulous patients
p. 12
V Vinutha Kumari, Gouri V Anehosur, Roseline Meshramkar, Ramesh K Nadiger, K Lekha
DOI
:10.4103/2347-4610.182961
Purpose:
To compare the sagittal condylar guidance angle obtained by extra oral gothic arch tracing and orthopantomogram in completely edentulous subjects.
Material and Methods:
Ten completely edentulous subjects were selected by the inclusion and exclusion criteria. Conventional steps in the fabrication of complete denture with balanced occlusion were carried out. Extra oral gothic arch tracing records were obtained for every patient. Protrusive interocclusal records were used to program the Hanau wide vue semiadjustable articulator, thus obtaining the sagittal condylar guidance angle by clinical method. On the orthopantomogram obtained for every patient in the study, orbitale and porion were located and the Frankfurts horizontal reference line was drawn. The most superior and the inferior points on the glenoid fossa curvature were located and a mean curvature line was obtained. A third reference line passing through the most superior and the inferior points on the glenoid fossa was extended to intersect the Frankfurts horizontal plane, thus obtaining the radiographic sagittal condylar guidance. These values were tabulated and subjected to Wilcoxon Signed Ranks test.
Results:
There is statistically significant difference between the sagittal condylar guidance values obtained between right and left sides with extra oral gothic arch tracing and orthopantomographic method (p value is 0.014 and 0.007 respectively).
Conclusions:
The use of orthopantomogram to set the condylar guidance on the semi adjustable articulator for complete denture therapy is questionable.
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CASE REPORTS
Five-year clinical follow-up of a patient with radicular cyst in the maxillary anterior region
p. 17
Onjen Tak, Serdar Yilmaz, Emre Ozel, Meral Kavak
DOI
:10.4103/2347-4610.182958
Radicular cysts arise from proliferation of epithelium remnants around apices of nonvital teeth as a result of an inflammatory response to the necrotic pulp and chronic infection and are the most common cystic lesion of the jaws. If these lesions are not treated successfully the extractions of the associated nonvital teeth have to be performed, and the tooth loss in patients can cause aesthetic, functional, and psychological problems, particularly if the anterior region is involved. Multidisciplinary treatment proposed to encourage long.-term success and aesthetic result in such cases. This case report describes the multidisciplinary management to a 37-year-old male patient with a particularly large maxillary radicular cyst associated with the roots of five maxillary anterior teeth. The patient's esthetic and functional expectations were achieved after the endodontic, surgical, and prosthetic treatments. After 5-year follow-up, excellent bone healing, steady levels of bone, and healthy periodontal tissues around the abutment teeth were observed.
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Development of a lingual rest seat using adhesive composite resin after removable partial denture delivery
p. 22
Chikahiro Ohkubo, Satoshi Shimizu, Toshiyuki Murata, Yoshiya Miyama, Kenneth S Kurtz
DOI
:10.4103/2347-4610.182960
To improve the support of removable partial dentures, lingual rests are usually prepared on anterior incisor teeth or canines. However, lingual rest seat preparations in enamel are rarely satisfactory on anterior teeth because the enamel lacks the necessary thickness; an adequate rest seat form can be prepared on the working cast using wax, and a cingulum rest seats have been clinically provided using bonded composite resin without sacrifice of tooth structure. This is a conservative and repeatable procedure; if a debonding of the composite rest occurs, it can be simply and quickly replaced.
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