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1989

Articles 1 - 9 of 9

Full-Text Articles in Oral Biology and Oral Pathology

The Concentration Of Prostaglandin E2 In Periradicular Lesions, Steve N. Mcnicholas Aug 1989

The Concentration Of Prostaglandin E2 In Periradicular Lesions, Steve N. Mcnicholas

Loma Linda University Electronic Theses, Dissertations & Projects

Prostaglandins (PG) have been implicated in pathogenesis of periapical lesions. The purpose of this study was to determine the concentrations of PGE2 in human periapical lesions. Periapical specimens from patients with clinical signs and symptoms of chronic and acute apical periodontitis were obtained and immediately frozen in liquid nitrogen. Periradicular tissues from unerupted third molars were frozen and used as controls. The concentration of PGE2 was determined by radioimmunoassay. Low levels of PGE2 were found in the control tissues as compared to those detected in chronic and acute lesions. A significantly higher level of PGE2 was …

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Association Between Cigarette-Smoking And Prevalence Of Oral Mucosal Lesions Among Malaysian Army Personnel, Rosnah Binti Zain, Razak I. A. May 1989

Association Between Cigarette-Smoking And Prevalence Of Oral Mucosal Lesions Among Malaysian Army Personnel, Rosnah Binti Zain, Razak I. A.

Prof. Dr. Rosnah Binti Zain

The association between cigarette smoking and the prevalence of oral mucosal lesions was examined in 495 Malaysian army personnel. No associations between cigarette smoking and recurrent aphthous ulcerations, pre-leukoplakia and frictional keratosis could be obtained in this study. Positive associations were found between cigarette smoking and leukoedema as well as denture stomatitis. There was a negative association between cigarette smoking and the presence of coated tongue.

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The Influence Of Different Margin Designs On Casting Accuracy, Jung-Zen. Syu Jan 1989

The Influence Of Different Margin Designs On Casting Accuracy, Jung-Zen. Syu

Master's Theses

No abstract provided.

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Single-Dose Carcinogen (Dmba) And Multiple Doses Of Promoter (Tpa): Study Of The Induction Of Transformed Cells In Hamster Buccal Pouch Epithelium, Yen-Tung Teng Jan 1989

Single-Dose Carcinogen (Dmba) And Multiple Doses Of Promoter (Tpa): Study Of The Induction Of Transformed Cells In Hamster Buccal Pouch Epithelium, Yen-Tung Teng

Master's Theses

No abstract provided.

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The Social Impact Of Oral And Facial Pain In An Industrial Population, Rosnah Binti Zain Jan 1989

The Social Impact Of Oral And Facial Pain In An Industrial Population, Rosnah Binti Zain

Prof. Dr. Rosnah Binti Zain

The aim of this study is to determine the social impact of oral and facial pain in a sample involving an industrial population. Out of a total of 355 subjects interviewed, nearly one-half claimed to have oral and facial pain in the previous one month prior to the survey. The most common type of pain was that related to hot or cold fluids or sweet things followed by toothache. On the average, the pain lasted for 4.2 days (SD = 4.9) per person in the past one-month. About one in five persons with pain reported that it was severe enough …

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Radiographic Features Of Periapical Cysts And Granulomas, Rosnah Binti Zain, Roswati N., Ismail K. Jan 1989

Radiographic Features Of Periapical Cysts And Granulomas, Rosnah Binti Zain, Roswati N., Ismail K.

Prof. Dr. Rosnah Binti Zain

Many studies have been reported on radiographic lesion sizes of periapical lesions. However no studies have been reported on prevalences of subjective radiographic features in these lesions except for the early assumption that a periapical cyst usually exhibit a radiopaque cortex. This study is conducted to evaluate the prevalences of several subjective radiographic features of periapical cysts and granulomas in the hope to identify features that maybe suggestive of either diagnosis. The results showed that a regular (circular or semi-circular) radiographic outline is likely to be a periapical cyst while an irregular radiographic outline is not indicative of either a …

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Radiographic Evaluation Of Lesion Sizes Of Histologically Diagnosed Periapical Cysts And Granulomas, Rosnah Binti Zain, Roswati N., Ismail K. Jan 1989

Radiographic Evaluation Of Lesion Sizes Of Histologically Diagnosed Periapical Cysts And Granulomas, Rosnah Binti Zain, Roswati N., Ismail K.

Prof. Dr. Rosnah Binti Zain

A total of 149 periapical lesions were classified histologically into cysts, granulomas and other lesions. It was found that 53% were cysts, 39% were granulomas and 8% were other lesions. Of the 149 periapical lesions classified, 69 selected cases of cysts and granulomas were obtained and radiographic measurements of area (mm2), largest diameter (mm) and largest root-to-border distance (mm) were recorded. It was found that there is an apparent increase in cystic prevalence with an increase in the area, largest diameter or largest length of the periapical lesions radiographically. A cystic prevalence of 92-100% is observed with a radiographic area …

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Oral Lichenoid Reactions During Antimalarial Prophylaxis With Sulphadoxine-Pyrimethamine Combination, Rosnah Binti Zain Jan 1989

Oral Lichenoid Reactions During Antimalarial Prophylaxis With Sulphadoxine-Pyrimethamine Combination, Rosnah Binti Zain

Prof. Dr. Rosnah Binti Zain

The prevalence of clinically observed oral lichenoid reaction in 186 Malay army personnel using Fansidar for 9 weeks was found to be 4.8%. The prevalence was found to be 0.5% in 186 army personnel who had stopped using Fansidar for 2 months and 0% in 143 army personnel (control group) who had not used Fansidar for at least 4 months. The lesion showed a higher prevalence for the gingiva. There was no correlation between cigarette smoking and the occurrence of these lesions in each group

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Morphological Changes In Taste Buds Of The Fungiform Papillae After A Single Dose Of X-Ray Irradiation In Rats, Rosnah Binti Zain, Hanks C. T. Jan 1989

Morphological Changes In Taste Buds Of The Fungiform Papillae After A Single Dose Of X-Ray Irradiation In Rats, Rosnah Binti Zain, Hanks C. T.

Prof. Dr. Rosnah Binti Zain

The qualitative and quantitative changes occurring in the taste buds of the fungiform papillae of male Sprague-Dawley rats (aged 51-125 days old) after x-ray irradiation were studied. A single dose of 2000 Roentgen (R) was delivered and observations were made at 0, 3, 7, 14, 21 and 30 days after x-ray irradiation. The changes in taste bud morphology were interpreted first as degenerative and then as regenerative at various stages of the study. The degenerative process appeared at about the third day and reached a peak at 7 days. Regeneration then began after a further week and the taste buds …

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