Download Dr.S. RAVINDRA, MDS

RAJIV GANDHI UNIVERSITY OF HEALTH SCIENCES,
KARNATAKA, BANGALORE.
ANNEXURE-II
PROFORMA FOR REGISTRATION OF SUBJECTS FOR DISSERTATION
1.
NAME OF THE CANDIDATE AND
Dr.SOLANKI MITESH
ADDRESS (IN BLOCK LETTERS)
PRADIPKUMAR,
POST GRADUATE STUDENT,
SRI HASANAMBA DENTAL COLLEGE
AND HOSPITAL,
VIDYANAGAR,
HASSAN-573201,
KARNATAKA.
2.
NAME OF THE INSTITUTION
SRI HASANAMBA DENTAL
COLLEGE AND HOSPITAL,
VIDYANAGAR,
HASSAN-573201,
KARNATAKA.
3.
COURSE OF STUDY AND SUBJECT
MASTER OF DENTAL SURGERY IN
ORAL PATHOLOGY AND
MICROBIOLOGY
4.
DATE OF ADMISSION TO COURSE
30 - 05 - 2012
“SEXUAL DIMORPHISM IN MESIO5.
TITLE OF THE TOPIC
DISTAL AND BUCCO-LINGUAL
DIMENSIONS OF ALL PERMANENT
TEETH IN A RANDOM SAMPLE OF
HASSAN POPULATION.”
BRIEF RESUME OF THE INTENDED WORK:
6.1Need for the study:
The main attributes of biological identity in forensic science are to determine the
gender, age and ethnic or racial background of the individual. In forensic human
identification, gender determination is usually the first step in the identification
process. Tooth forms an excellent material in living and non-living populations for
anthropological, genetic, odontologic and forensic investigations.1 Tooth dimensions
are used to establish the sex of a victim in major accidents, medico-legal cases and
natural disasters. As sexual dimorphism of teeth varies among different populations,
the use of population specific data is necessary for sex determination in forensic
science.2
Although many researchers have studied sexual dimorphism in teeth size around
the world, no such study has been recorded in Hassan population. This study will be
conducted to know sex determination potential from Mesio-Distal and Bucco-Lingual
dimensions of all permanent teeth in a random sample of Hassan population.
6.2Review of Literature:
1. A study was conducted on 133 greek individuals(70 males and 63 females) to
examine Mesio-Distal and Bucco-Lingual crown and cervical diameters of all
permanent teeth. It was found that males have bigger teeth than females and
canines were the most dimorphic teeth followed by 1st premolars.2
2. Another study was conducted on 53 Nepalese adults consisting of 22 women
and 31 men. The study casts were obtained and the Bucco-Lingual and MesioDistal measurements of teeth were taken. The analysis for both these
measurements was done separately. The Mesio-Distal dimensions could
discriminate sex better than those for Bucco-Lingual dimensions.3
3. Another study was conducted in 200 subjects (100 males and 100 females) to
evaluate existence of sexual dimorphism in maxillary 1st molars. Bucco-Lingual
and Mesio-Distal diameters of maxillary 1st molars were measured intraorally
and on study casts and were compared. Statistically significant sexual
dimorphism was found in maxillary 1st molars.1
4. Another study was conducted in 100 individuals in India (50 males and 50
females) to examine sexual dimorphism in permanent maxillary incisors and
canines by measuring Mesio-Distal dimensions. It was found that maxillary
canines exhibit significant sexual dimorphism and can be used for sex
determination.4
5. Another study was conducted in 90 males and 90 females in India to examine
the Mesio-Distal width of right and left mandibular canines and intercanine
distance. Significant sexual dimorphism was found in all parameters except
intercanine distance.5
6.3 OBJECTIVES OF THE STUDY:
1) To determine sexual dimorphism in Mesio-Distal and Bucco-Lingual dimensions of
all permanent teeth.
2) To analyze which tooth shows maximum sexual dimorphism.
3) To determine which tooth dimension provides accurate sex
determination – Mesio-Distal or Bucco-Lingual dimension.
MATERIALS AND METHODS :
7.1 Source of data:
The source of data for this study will be from patients visiting Sri Hasanamba Dental
College & Hospital, Hassan.
This study will involve 100 individuals of Hassan population (50 males and 50
females) and it will be conducted in the Department of Oral Pathology, Sri Hasanamba
Dental College & Hospital, Hassan.
Materials:
1. Alginate impression material.
2. Type IV Dental Stone
3. A Digital Vernier Caliper with Accuracy of 0.01mm (Mitutoyo company)
7.2 Method of collection of data:
INCLUSION CRITERIA:
1. Individuals with age of 20-25 years will be included.
2. Individuals with fully erupted, periodontally healthy, non-carious, intact and
satisfactorily aligned teeth will be included.
EXCLUSION CRITERIA:
1. Individuals with anodontia, partially edentulous, malformed /hypoplastic teeth
will be excluded.
2. Individuals who wear crowns, removable partial dentures, fixed partial dentures
and other appliances or have any anomalies that could influence the
measurements will be excluded.
3. Individuals having teeth with Class II, Class III & Class IV restorations will be
excluded.
4. Individuals with clinical features suggestive of developmental disturbances of
teeth, metabolic disorders and medically compromised states will be excluded.
PROCEDURE:
1. An approval from the Institutional Ethical Committee shall be obtained
before beginning the study.
2. All the participants will be given full information about the purpose of the
study and written informed consent will be taken before undertaking the
study.
3. Thorough history will be taken and clinical examination of the patients will
be done.
4. Patients will be selected according to inclusive and exclusive criteria.
5. Maxillary and Mandibular arch impressions will be made using alginate
impression material and casts will be poured with TYPE IV Dental Stone.
6. Measurements of Mesio-Distal and Bucco-Lingual dimensions of all the
teeth (excluding 3rd molars) will be recorded using digital vernier caliper on
casts.
7. The percentage of sexual dimorphism will be calculated using the formula
given by Garn et al.6
Statistical Analysis:
Data will be collected and statistically analyzed.
Descriptive analysis will be done with mean and standard deviation.
An unpaired t-test will be used to compare the differences in Mesio-Distal and BuccoLingual measurements of all permanent teeth among males and females.
7.3. Does the study require any investigations or interventions to be conducted on
patients or other humans or animals? If so please describe briefly.
YES.
Alginate impressions of the teeth of upper and lower jaws will be made with patient
consent.
7.4 Has ethical clearance been obtained from your institution in case of 7.3?
YES.
LIST OF REFERENCES:
1. Sonika V, Harshamindar K, Madhushankari G S, Sri Kennath J A. Sexual
dimorphism in the permanent maxillary first molar: A study of the Haryana
population(India). J Forensic Odontostomatol 2011;29:37-43.
2. Zorba E, Moraitis K, Manolis SK. Sexual dimorphism in permanent teeth of
modern Greeks. Forensic Sci Int 2011;210:74-81.
3. Acharya AB, Mainali S. Sex determination potential of buccolingual and
mesiodistal tooth dimensions. J of Forensic Sci 2008;53:790-2.
4. Khangura RK, Sircar K, Singh S, Rastogi V. Sex determination using
mesiodistal dimension of permanent maxillary incisors and canines. J Forensic
Dent Sci 2011;3:81–5.
5. Vishwakarma N, Guha R. A study of sexual dimorphism in permanent
mandibular canines and its implications in forensic investigations. Nepal Med
Coll J 2011;13:96-9.
6. Garn SM, Lewis AB, Swindler DR, Kerewsky RS. Genetic control of sexual
dimorphism in tooth size. J Dent Res 1967;46:963-72.
9.
SIGNATURE OF THE
CANDIDATE
10.
REMARKS OF THE GUIDE
11.
NAME & DESIGNATION OF
(IN BLOCK LETTERS)
11.1 GUIDE
(Dr.SOLANKI MITESH
PRADIPKUMAR)
Dr.SARVANI MURTHY, M.D.S
PROFESSOR AND HEAD,
DEPARTMENT OF ORAL PATHOLOGY,
SRI HASANAMBA DENTAL COLLEGE
AND HOSPITAL,
HASSAN-573201
11.2 SIGNATURE
11.3 CO-GUIDE (IF ANY)
11.4 SIGNATURE
11.5 HEAD OF THE
DEPARTMENT
Dr.SARVANI MURTHY, M.D.S
PROFESSOR AND HEAD,
DEPARTMENT OF ORAL PATHOLOGY,
SRI HASANAMBA DENTAL COLLEGE
AND HOSPITAL,
HASSAN – 573201
11.6 SIGNATURE
12.
REMARKS OF THE CHAIRMAN
& THE PRINCIPAL
12.1 SIGNATURE
Dr.S. RAVINDRA, M.D.S.
PRINCIPAL,
SRI HASANAMBA DENTAL COLLEGE
AND HOSPITAL,
HASSAN – 573201.