Journal of Dental Medicine

Primary Hyperparathyroidism. Statistical Study about Patient to bed in Imam Khomeiny and Shariaty Hospitals (67-1376 Years)

In this study we try to clear the prevalance of age and sex and clinical and radiographic manifestations of primary hyperparathyroidism. In this duration 47 patients with primary hyperparathyroidism that bed in two important hospitals in Tehran were studied.The ratio between women to men was 7 to 1 and most prevalance of disease were in fouyth decade. The pain boon was the cheif complain of patients and osteopenia was the most radiographic findings.In addition a case of primary hyperparathyroidism with mandibular and other bone involvement was reported.

Eagle Syndrome

Eagle's syndrome is characterized by an elongated styloid process and (or) calcification of stylohyoid ligament besides clinical symptoms. The symptoms are those related to pain when swallowing or rotating the neck, headacke, earache, dizziness, intermittent glossitis, sensation of foreign body in pharynx and transient syncope. The case which is presented can be considered a very rare form of the disease in which complete calcification of the ligament and it's thickening has occured. Also there is little relationship between the severity of calcification and severity of symptoms.A careful and thorough evaluation of each panoramic radiography is emphasized.

Vertical dimonsion changes after muscle relaxation

MH. Shahroodi

In this study, 116 edentulous patients in the age group 37-90 yrs were selected. Out of the above,12 patients had visited the dept. Of prosthodontics for the first time for treatment. Other 34 of them were patients of the dental school and the rest were from Kahrizak and Nikan sanatoriums.Initially, the V.D. of rest was measured as usual for all the patients. After subjecting them to the excercises of completely opening and closing of the mouth for 15 no. of times, the rest position was measured again. Results show that the changes in V.D.R. after, excercises, relaxing the elevator and depressor muscles and the duration of usage of prosthesis, the following conclusions are obtained.
1. There is an increase in V.D.R. after tiring out the elevator and depressor muscles of the jaws.
2. There is a direct co - relation between the increased V.D.R. and duration of use of prosthesis after excercises.
3. Change in the V.D.R. after excercise is notably more in women.
4. No definite conclusion is obtained in the relationship between changes in V.D.R. after excercises and use of prosthesis during sleep.
5. As above no conclusions as yet can be deduced between changes in V.D.R. and different operators.

Introducing the HbAlc test for diagnosis, evaluation and longterm control of diabetesin patient with poridontal disease

Y. Soleymani Shayesteh

Regard this, that majority of Diabetic patients that soffer from periodontal disease. Now, most of espesialist belive that these patients need to control their diabets with new methods for decreasing and controlling thier periodontal disease.Today, most of physician, majority of periodontal for controlling of HbAlc Test.This test does not need to patient's cooperation and can do in any time.This test estimate,s the irreversible bound of hemogloboiin with glucose and from this point that half- life of red blood cell is 90-120 days the resuolt of this test is useable for every 5 months.

A Study on prevalence of detofacial anomalies in 12 to 14 years old students inTehran

The purpose of this study was to determine the prevalence of dentofacial anomalies in 12 to 14 years old students in Tehran.The sample consisted of 500 students. 250 of them were females and 250 were males. The evaluation of saggital skeletal relationships revealed tha 16% of samples had normal occlusion, 48% of them had CI I malocclusion, 15,6% had CI II Div I malocclusion, 12% of them had CI HI malocclnsion, 5.2% of them had CI. II Div 2 malocclusion and 3.2% of them had pseudo CI III malocclusion. The prevalence of other dentofacial anomalies obtained in this study are, crowding 40.6%, deepbite 27.2%, spacing 20.6%, mandibular deviation 19.4%, unilateral posterior crossbite 9.2%, anterior openbite 6.6%, posterior openbite 5.6%, asymmetry 1.6% and bilateral posterior crossbite 1.6%. The prevalence of dental anomalies in the sample population was as follws: rotated teeth 13.4%, malposed teeth 12.2%, teeth with large size 3.2%, malshaped teeth 2.4% and teeth with smal size 2%. A part from determining the total values mentioned, the prevalence of saggital relationships oral dentofacial anomalies was assessed separately in each of the female and the male samples.

A clinical stydy on the effectiveness of slow - resorbing collagen membrane barrier therapy to guide regeneration in mandibular class II furcations in human

A A. Khoshkhoonejad

The present clinical trial was designed to evaluate the regenerative potential of periodontal tissues in degree II furcation defects at mandibular molars of human using a slow-resorbing collagen membrane and a surgical treatment technique based on the principles of guided tissue regeneration.The patient sampleinclude 8 subjects who had periodontal lessions in right and left mandibular molars regions, including moderate to advance periodonal destruction within the radicular area. Following a baseline examination including recording the clinical measurements (PD, Al, HC, F.G.M) , the furcation- involved molars were randomly assigned in each patient to either a test or a control treatment procedure. Included the evevation of mucoperiosteal flaps, recording measurement from the cemento enamel junction (C.E.J) directly coronal to the furcation area to the alveolar crest and to the base of the defect-Horizontal furcation measurements were also made using a William's probe, finally a collagen membrrane placed on the involved area to cover the entrance of the furcation and adjucent root surfaces as well as a portion of the alveolar bone apical to the crest. The flaps were repositioned and secured with interdental sutures. A procedure identical to the one used at the test teeth was Performed at the control teeth region with the exception of the placement of the collagen membrance. Following surgery all patients were placed on a plaque control regimen. All Patients received normal postsurgical care and at 6 month post-surgery were scheduled for re-entry surgery. Before re-entry surgery all clinical parameters recorded again. The re-entry mucoperiosteal flaps were designed to expose the furcation area for measurements, as describedabove. There was clinical improvement in all measurements made in both the test and control patients (especially in test group) over the 6 month period. The horizontal and vertical furcation measurements did yield a statistically significant imporvement when companing the test patients to the control.

Attachment in Dentistry

H. Dr. Behnaz

Removable and fixed prosthesis are fabricated for reasons of appearance, mastication, speech clarity and general well - being. At the same time, they must preserve remaining theeth. Alveolar bone, Ginginal tissue and tooth position by bringing the forces acting on the removavle prosthesis within the limits of tissue tolerance. Satisfying these objectives may reqiure the use of single crowns of fixed partial denture with specific contours and attachments that provide the necessary support and retention for the prosthesis.However, before any detailde discussion can takeplace, it is desirble to divide attachments into groups. Several classifications have been divised, based mainly on the attributes claimed for the devices by the attachment manufactures.Since the function severed by an attachment depend entirely upon the manner in which it is used and function in the mouth are complex and by no means completely understood, the classification of prefabricated attachments used in this title has been based on their shape.

Distribution of filled, decayed and missed teeth in North West of Tehran

The purpose of this article is to study distribution of DMF(T) and its D,M and F protions exactllly. 1500 subjects were examined clinicaly. They were 5 to 70 years old, with average 24 years. Only cavitated and coronal dental caries included in this research.

The results of this study are:
1. The caries lesions of upper and lower second permolars are equal.
2. Anterior to second premolars, the DMF(T) of upper jaw teeth is higher than lower jaw's one. Conversely posterior to second premolars, lower jaw teeth has higher DMF(T).
3. Deciduous teeth of females have lower DMF(T).
4. Permanent teeth of females have higher DMF(T).
5. The upper Canines of females are exceptions. Upper canines of females have lower DMF(T) than males' ones.
6. It seems that sex hormones influence DMF(T) through Saliva and eruption time of teeth.
7. Susceptibility to Caries relates to microbial plaque formation and salivary protection.
8. The females have more filled teeth than males.