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Full-Text Articles in Medicine and Health Sciences

Tooth Size Discrepancies In An Orthodontic Population, Othman S. A., Harradine N. Jun 2007

Tooth Size Discrepancies In An Orthodontic Population, Othman S. A., Harradine N.

Siti Adibah Othman

Objective: To explore how many millimeters of tooth size discrepancy (TSD) are clinically significant, to determine what percentage of a representative orthodontic population has such a tooth size discrepancy, and to determine the ability of simple visual inspection to detect such a discrepancy. Materials and Methods: The sample comprised 150 pretreatment study casts with fully erupted and complete permanent dentitions from first molar to first molar, which were selected randomly from 1100 consecutively treated white orthodontic patients. The mesiodistal diameter tooth sizes were measured using digital calipers, and the Bolton analysis and the tooth size corrections were calculated by the …


Comparison Of Laser And Phosphoric Acid Etching On Sealant Shear Bond Strength, Seth David Latimer Jun 2007

Comparison Of Laser And Phosphoric Acid Etching On Sealant Shear Bond Strength, Seth David Latimer

Loma Linda University Electronic Theses, Dissertations & Projects

PURPOSE: To compare the effect of traditional phosphoric acid etching with Er,Cr:YSGG laser enamel etching on the shear bond strength of sealant material.

METHODS: Extracted healthy third molars were mounted in acrylic exposing the flattest surface available. Three groups of twenty teeth were used to evaluate traditional acid etching with 37% phosphoric acid as a control group as well as two different laser settings. The sealant material was attached using specialized jigs and then subjected to shear bond strength testing utilizing the ultradent method (MTS machine). Statistical methods employed were the Kruskal-Wallis rank test and the Mann-Whitney U test.

RESULTS: …


A Microleakage Study Of Cements With Stainless Steel Crowns, Heidi Joy Apuy Jun 2007

A Microleakage Study Of Cements With Stainless Steel Crowns, Heidi Joy Apuy

Loma Linda University Electronic Theses, Dissertations & Projects

PURPOSE: To compare the ability of newer adhesive resin cements and traditional glass ionomer cements to prevent microleakage under stainless steel crowns on extracted permanent third molars.

METHODS: All teeth were hand prepared and stainless steel crowns were cemented according to manufacturers' instructions. The specimens were thermocycled for 500 cycles and immersed in 2% methylene blue dye solution for 8 hours. Each tooth was imbedded in resin and cut into I mm thick sections by a slow speed diamond saw. The amount of microleakage was measured in microns under a traveling microscope. The measurements of each section of a tooth …


Salivary Characteristics In 3 And 4 Year-Old Children With And Without Visible Caries, Gloria Yañez Jun 2007

Salivary Characteristics In 3 And 4 Year-Old Children With And Without Visible Caries, Gloria Yañez

Loma Linda University Electronic Theses, Dissertations & Projects

PURPOSE: To compare salivary characteristics in 3 and 4 year-old Head Start children with and without visible caries.

METHODS: This case-control study was performed on 84 healthy 3 and 4 year-old Head Start children. After consent and inclusion criteria were met, each child was screened and assigned to one of two test groups based on their caries status. Group 1 consisted of children with no visible evidence of caries, although non-visible caries may have been present. Group II consisted of children with visible evidence demonstrating three or more carious lesions. Each child's unstimulated and stimulated whole saliva samples were collected …


Effect Of Polishing Brushes On Dental Composite Resins, Robert Shun-I Wang May 2007

Effect Of Polishing Brushes On Dental Composite Resins, Robert Shun-I Wang

Loma Linda University Electronic Theses, Dissertations & Projects

PURPOSE: The effectiveness of many commercially available composite finishing and polishing devices have been studied and compared. However, no studies have directly compared the effectiveness among the polishing brushes. This study set out to (1) investigate the surface roughness reduction and gloss value increase of two universal dental composites polished by three polishing brushes and two well-studied finishing and polishing systems, and (2) to evaluate resulting surface morphology using scanning electron microscopy (SEM).

METHODS: 10 specimens were fabricated for each of five polishing groups for both composite resins, one microhybrid (Herculite XRV) and one nanofilled composite (Filtek Supreme Plus). Each …


Assessment Of Patients' Level Of Satisfaction With Cleft Treatment Using The Cleft Evaluation Profile, Noor S. N., Musa S. Apr 2007

Assessment Of Patients' Level Of Satisfaction With Cleft Treatment Using The Cleft Evaluation Profile, Noor S. N., Musa S.

Sabri Musa

OBJECTIVES: Determination of the psychosocial status and assessment of the level of satisfaction in Malaysian cleft palate patients and their parents. DESIGN: Cross-sectional study. PARTICIPANTS AND METHODS: Sixty cleft lip and palate patients (12 to 17 years of age) from Hospital Universiti Sains Malaysia and their parents were selected. The questionnaires used were the Child Interview Schedule, the Parents Interview Schedule, and the Cleft Evaluation Profile (CEP), administered via individual interviews. RESULTS: Patients were teased because of their clefts and felt their self-confidence was affected by the cleft condition. They were frequently teased about cleft-related features such as speech, teeth, …


Developmental Variations In Plasma Leptin, Leptin Soluble Receptor And Their Molar Ratio In Healthy Infants, Winston Wk Koo, Mouhanad Hammami, Elaine M. Hockman Jan 2007

Developmental Variations In Plasma Leptin, Leptin Soluble Receptor And Their Molar Ratio In Healthy Infants, Winston Wk Koo, Mouhanad Hammami, Elaine M. Hockman

Wayne State University Associated BioMed Central Scholarship

Abstract

Background

Leptin and its soluble receptor (sOB-R) are important to regulation of body composition but there are no data on the developmental variations in these plasma variables and their relationship with body composition measurements,

Methods

Weight, length, and body composition (bone, fat and lean mass) by dual energy absorptiometry, and plasma variables were measured in healthy infants at 2, 4, 8 and 12 months.

Results

15 whites and 29 African Americans (21 males and 23 females) with mean birth weight 3357 +/- 45 (SEM) g and gestation of 39.3 +/- 0.17 weeks were studied. The overall Z score for …


Tooth-Size Discrepancy And Bolton's Ratios: The Reproducibility And Speed Of Two Methods Of Measurement, Othman S. A., Harradine N. W. Jan 2007

Tooth-Size Discrepancy And Bolton's Ratios: The Reproducibility And Speed Of Two Methods Of Measurement, Othman S. A., Harradine N. W.

Siti Adibah Othman

OBJECTIVE: To determine and compare the reproducibility and speed of two methods of performing Bolton's tooth-size analysis. DESIGN: Analysis of randomly selected clinical sample. SETTING: Bristol Dental Hospital, University of Bristol, United Kingdom. MATERIALS AND METHODS: Pre-treatment study casts of 150 patients were selected randomly from 1100 consecutively treated Caucasian orthodontic patients. Bolton tooth-size discrepancies and ratios were measured using two methods; one method employed entirely manual measurement and the Odontorule slide rule, while the other employed digital calipers and the HATS analysis software. Twenty study casts were measured twice, a week apart with both methods. Another three investigators also …


The Effect Of A Nominal Fee On Treatment Choices For Children Needing Dental Rehabilitation, D'Audra M. Cole Jan 2007

The Effect Of A Nominal Fee On Treatment Choices For Children Needing Dental Rehabilitation, D'Audra M. Cole

Theses and Dissertations

Objective: The purpose of the study was to determine if a co-payment resulted in a differential preference for general anesthesia (GA) or oral sedation (OS) and, if so, to examine whether age, the number of appointments, perceived risks of treatment, child's awareness during treatment, or insurance type appeared to play a role in this preference.Methods: Using a cross-sectional survey design, questionnaires were distributed to caregivers of patients in the waiting room of the Virginia Commonwealth University Pediatric Dental Clinic. Two different questionnaires were distributed randomly. Both surveys described a scenario with the need for dental treatment under general anesthesia (GA) …


Oral Health Services In A Medical Setting, Robert William Mansman Ii Jan 2007

Oral Health Services In A Medical Setting, Robert William Mansman Ii

Theses and Dissertations

Purpose: The purpose of this study is to examine the baseline oral health status of infants and the level of their caregiver's oral health knowledge for families who received preventive oral health services in a medical setting. Methods: Using a prospective cohort study, children 0-3 years of age received an oral health screening, risk assessment, caregiver education, and a fluoride varnish treatment in an ambulatory pediatric medical clinic. A 16-item oral health knowledge and socio-demographic questionnaire was delivered to the caregiver of child. This questionnaire included knowledge, behavior and opinion items on risk factors for dental diseases, care of child's …


Children With Special Needs Oral Health Quality Of Life Survey, Kristin Elizabeth Nelson Jan 2007

Children With Special Needs Oral Health Quality Of Life Survey, Kristin Elizabeth Nelson

Theses and Dissertations

Purpose: The purpose of this study was to asses the oral health quality of life of children with special health care needs. This study examined the effects of oral health conditions on general well-being and family life of these children. A secondary aim of the study was to investigate correlations between specific health care conditions, gender, and age of these children and their global ratings of oral health and well-being.Methods: This study was a cross-sectional design with subjects who are members of the Virginia Care Connection for Children program, based at Virginia Commonwealth University. The oral health quality of life …


Adverse Anesthesia Outcomes: A Retrospective Study Of An Ambulatory Surgical Center Versus A Dental Office Setting, Gaurav Agarwal Jan 2007

Adverse Anesthesia Outcomes: A Retrospective Study Of An Ambulatory Surgical Center Versus A Dental Office Setting, Gaurav Agarwal

Theses and Dissertations

Purpose: The purpose of this study was to compare the adverse events that occur with general anesthesia for dental rehabilitation between a hospital setting and dental clinic setting. Methods: A retrospective chart review was performed examining patients who had received dental rehabilitation with general anesthesia at the Virginia Commonwealth University Department of Pediatric Dentistry. Subjects were either treated in the Pediatric Dental Clinic or the Hospital Ambulatory Surgery Center (ASC) from July 2005 to December 2006. Anesthesia records of induction, intubation, maintenance, emergence and recovery were compared between the two settings.Results: There were a total of 422 charts reviewed with …


A Survey On The Usage Of Articaine Among General And Pediatric Dentists, Robert Louis Hollowell Iii Jan 2007

A Survey On The Usage Of Articaine Among General And Pediatric Dentists, Robert Louis Hollowell Iii

Theses and Dissertations

Purpose: The purpose of this study is to determine the impact that the introduction of articaine has had on local anesthetic selection by general and pediatric dentists for use in three different age groups of children.Methods: Using a cross sectional survey design, a questionnaire regarding the use of local anesthetics in children was mailed to a random sample of 500 general dentists from North Carolina, 500 general dentists from Virginia, and all 230 pediatric dentists from North Carolina and Virginia. The 16-item questionnaire included questions regarding the preferred local anesthetic to use in three different age groups, 2-3 years of …