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THESIS TOPICS OF MDS ORTHODONTICS IN BPKIHS DONE BY MDS POST GRADUATE RESIDENTS

 This is a compilation of all the thesis topics done at B.P. Koirala Institute of Health Sciences, Dharan, Nepal, by postgraduate residents in the Department of Orthodontics and Dentofacial Orthopedics.

1. ORIENTATION AND POSITION OF HYOID BONE IN ORTHODONTIC PATIENTS WITH DIFFERENT DENTOFACIAL GROWTH PATTERNS REPORTING TO CODS, BPKIHS: Dr. Bhushan Bhattarai, July 2014

2. THE SHAPE, SIZE, AND BRIDGING OF THE SELLA TURCICA IN SKELETAL CLASS I, II & III ADULT ORTHODONTIC PATIENTS, REPORTING TO CODS, BPKIHS: Dr. Gunjan Kumar Shrestha, July 2014

3. PHARYNGEAL WIDTHS COMPARISON IN DIFFERENT SKELETAL MALOCCLUSIONS AND GROWTH PATTERNS OF PATIENTS VISITING DEPARTMENT OF ORTHODONTICS, BPKIHS: Dr. Nabin Kumar Chaudhary, December 2020

4. CORRELATION BETWEEN DENTAL ARCH WIDTH AND VERTICAL FACIAL MORPHOLOGY IN PATIENTS SEEKING ORTHODONTIC TREATMENT IN BPKIHS, DHARAN, NEPAL: Dr. Subash Shrestha, May 2023

5. NEPALESE TRANSLATION AND VALIDATION OF THE ORAL AESTHETIC SUBJECTIVE IMPACT SCORE (OASIS) QUESTIONNAIRE: Dr. Sushant Pandey, June 2024

6. CORRELATION OF CRANIOFACIAL MEASUREMENTS ON A STANDARDIZED LATERAL PHOTOGRAPH WITH ANALOGOUS MEASUREMENTS ON A LATERAL CEPHALOGRAM: Dr. Raman Dhungel, August 2025

More topics will be updated soon.

MDS Orthodontics - Thesis Topics

 These are some very useful thesis topics that are practically useful and doable by postgraduate students.

## 1. Cephalometric and Radiographic Studies cephalometric analysis in orthodontic treatment planning

These studies utilize 2D radiographs (Lateral Cephalograms and OPGs) which are widely available.

  1. Cephalometric Norms for a Specific Nepalese Ethnic Group: Establish Steiner's or Tweed's cephalometric norms for a specific population (e.g., Newar, Rai, Gurung) to create a local database.

    • Practical Application: Provides more accurate diagnostic standards for local populations instead of relying solely on Caucasian norms.

  2. Soft Tissue Profile Changes after First Premolar Extractions: A retrospective study evaluating changes in the lips and chin position in Class I bimaxillary protrusion cases.

    • Practical Application: Helps in predicting esthetic outcomes and managing patient expectations regarding facial changes.

Navigating Advanced Dental Education: Fellowships, Clerkships, and Specializing in Cleft Lip and Palate Orthodontics

I. Introduction to Advanced Dental Training
This report provides a comprehensive overview of advanced educational pathways within the medical and dental fields, specifically distinguishing between fellowships and clerkships. The primary aim is to offer detailed guidance for orthodontists holding a Master of Dental Surgery (MDS) degree who seek to pursue further specialization in cleft lip and palate orthodontics. The information presented herein is designed to equip dental professionals with the knowledge necessary to make informed decisions regarding their advanced training and career trajectory.

Your specific interest in cleft lip and palate orthodontics underscores a desire for highly specialized, multidisciplinary training that extends beyond a general orthodontic residency. This report will address the unique requirements, opportunities, and challenges inherent in this niche field, providing a structured pathway for aspiring specialists.

II. Understanding Fellowships in Medical and Dental Fields
A. What is a Fellowship?
A fellowship represents a period of highly specialized medical or dental training undertaken after the successful completion of a core specialty training program, such as a residency. In the United States and Canada, during this advanced training period, the individual is formally known as a "fellow" or "fellow physician". For dentists, a fellowship typically constitutes a post-residency experience with a concentrated focus on a very specific area of practice, such as oral and maxillofacial surgery or, pertinently for this report, craniofacial orthodontics.

It is important to distinguish this clinical training fellowship from honorary fellowships, such as a "Fellowship in the Academy of Dentistry International".While the latter is a distinctive honor bestowed upon individuals for outstanding accomplishments and contributions to the dental profession (e.g., in clinical practice, research, education, or public service), it does not represent a period of structured clinical or research training in a subspecialty. The focus of this report is exclusively on the clinical and research-oriented training fellowships that lead to advanced specialization.

B. Purpose and Benefits of Fellowships
The fundamental purpose of a medical or dental fellowship is to cultivate expert practitioners within highly specialized subspecialties.2 Fellowships serve as a crucial transitional phase, enabling a resident to evolve into a fully independent specialist.2 This period is invaluable for forming professional connections and accessing advanced job opportunities within the chosen subfield.

Fellowship programs are characterized by their provision of significant, practical work experience, often granting fellows a substantial degree of responsibility early in their training. During this time, fellows collaborate closely with seasoned specialists, allowing them to profoundly deepen their clinical experience and knowledge within their specific subspecialty. Upon the successful completion of a fellowship program, the physician or dentist earns the esteemed title of "fellowship-trained." This designation signifies the highest level of dedication to their chosen field and qualifies them to practice medicine or dentistry independently within their subspecialty without direct supervision. Beyond direct patient care, achieving fellowship-trained status can enhance patient trust and open avenues for future leadership roles, including the opportunity to train subsequent generations of fellows.

C. Typical Duration and Structure of Fellowships
The typical duration of a medical or dental fellowship varies, generally ranging from one to three years, depending on the specific subspecialization. For instance, many craniofacial orthodontics fellowships are structured as 12-month programs. These programs are designed to provide advanced training within a highly focused subspecialty, with the explicit aim of refining and deepening a practitioner's expertise and skills beyond the scope of their initial residency training. The structure of fellowships consistently integrates several key components: intensive clinical training, comprehensive didactic instruction, and dedicated research activities. Fellows engage in hands-on patient care, participate in specialized conferences and seminars, and often undertake a significant research project to contribute to the scientific body of knowledge in their subspecialty.

III. Understanding Clerkships in Medical and Dental Fields

MCQs in Orthodontics - Orthodontic Growth and Development Assessment


# Which of the following terms describes an increase in the number of cells?
A. Hypertrophy
B. Maturation
C. Accretion
D. Hyperplasia

# The concept that growth occurs along an axis from head to tail is known as which growth pattern?
A. Anteroposterior
B. Proximodistal
C. Somatic
D. Cephalocaudal

# According to Scammons' curves, which tissue system exhibits the most rapid growth during the first few years of life, followed by a plateau?
A. Genital system
B. General body growth
C. Lymphoid system
D. Neural system

# Which theory of craniofacial growth posits that growth occurs primarily due to adaptive responses of the skeletal tissues to functional demands of surrounding soft tissues and spaces?
A. Sutural theory
B. Servosystem theory
C. Cartilage theory
D. Functional Matrix Theory

# The primary mechanism for the increase in size of the cranial vault after birth is:
A. Surface remodeling on the external surface of the vault
B. Endochondral ossification at the cranial base
C. Appositional growth at the condylar cartilage
D. Intramembranous bone formation at the sutures

# Which cranial base synchondrosis typically fuses last, continuing to contribute to anteroposterior cranial base growth into late adolescence?
A. Pterygomaxillary synchondrosis
B. Spheno-ethmoidal synchondrosis
C. Intersphenoid synchondrosis
D. Spheno-occipital synchondrosis

# Forward and downward growth of the maxilla primarily occurs through:
A. Appositional growth at the alveolar processes
B. Endochondral ossification within the maxilla itself
C. Direct bone formation at the midpalatal suture
D. Bone deposition at the maxillary sutures and surface remodeling

# Which of the following is the primary mechanism for the growth of the mandible during childhood?
A. Intramembranous ossification of the corpus
B. Endochondral ossification at the condylar cartilage
C. Growth at the symphysis
D. Sutural growth at the posterior border of the ramus

# According to Lavergne and Gasson's classification, which type of mandibular rotation refers to the rotation of the basal bone relative to the cranial base?
A. Intramatrix rotation
B. Matrix rotation
C. Total rotation
D. Alveolar rotation

# A patient with a high Frankfort-Mandibular Plane Angle (FMA) and a tendency towards an anterior open bite often exhibits which of Tweed's growth patterns?
A. Type A (Average/Mesofacial)
B. Type B (Horizontal/Brachyfacial)
C. Type C (Vertical/Dolichofacial)
D. Type D (Unclassified)

# Which pharyngeal arch gives rise to the muscles of mastication and the maxilla/mandible?
A. First pharyngeal arch
B. Second pharyngeal arch
C. Third pharyngeal arch
D. Fourth pharyngeal arch

# The primary palate develops from the fusion of which embryonic structures?
A. Two lateral palatine processes
B. Nasal septum and palatal shelves
C. Frontonasal prominence and mandibular prominences
D. Two medial nasal prominences and two maxillary prominences

# At what approximate gestational age does the fusion of the secondary palate typically begin?
A. Week 4
B. Week 6
C. Week 7-8
D. Week 10

# The primary driving force for the elevation of the palatal shelves during secondary palate formation is widely attributed to:
A. Rapid bone growth within the shelves
B. Tongue growth pushing the shelves upward
C. Intrinsic mesenchymal turgor pressure due to hyaluronic acid accumulation
D. Muscle contractions within the shelves

# Programmed cell death (apoptosis) plays a crucial role in the fusion of the palatal shelves by eliminating which specific tissue?
A. Nasal septal cartilage
B. Medial edge epithelium (MEE)
C. Mesenchymal cells of the shelves
D. Oral epithelial cells on the superior surface

# Which of the following maternal conditions during pregnancy is a known environmental factor that increases the risk of cleft palate?
A. Maternal anemia
B. Use of certain anticonvulsant medications (e.g., phenytoin)
C. Maternal hypothyroidism
D. Excessive intake of Vitamin C

# The neonatal line in enamel and dentin is formed as a result of:
A. Physiological stress associated with birth
B. Genetic predisposition for enamel hypoplasia
C. Trauma during eruption of primary teeth
D. Pre-natal systemic illness

# Which of the following conditions would typically lead to a thinner or less distinct neonatal line?
A. Diabetic mother
B. Low birth weight
C. Elective Caesarean section delivery
D. Asphyxia in the newborn

MCQs on Cephalometric Parameters and Malocclusion


# Which of the following cephalometric parameters suggest skeletal class III malocclusion? 1. ANB is less than 0 degree 2. SNA= 84 degrees 3. SNB=82 degrees 4. Wit’s appraisal shows point A before point B 5. FMA is 40 degrees
A. 2, 4 and 5
B. 1, 4 and 5
C. 3, 4 and 5
D. 1 and 3

# A patient presents with anterior crowding as a result of large size of teeth in comparison to the base of mandible. This will be classified as:
A. Tertiary crowding
B. Secondary crowding
C. Third degree crowding
D. Primary crowding

# Which of the following cephalometric angles is primarily used to assess the anteroposterior position of the maxilla relative to the cranial base?
A. FMA
B. SNB
C. ANB
D. SNA

# A patient with a skeletal Class II malocclusion typically exhibits which of the following characteristics?
A. Prognathic mandible
B. ANB angle greater than 4°
C. Retrognathic maxilla
D. Point B anterior to Point A on Wit's appraisal

# Which cephalometric parameter assesses the vertical relationship between the Frankfort Horizontal plane and the mandibular plane?
A. FMA
B. Y axis
C. Facial angle
D. SN-GoGn

# What is the normal average value for the SNA angle in a Caucasian population?
A. 86°
B. 78°
C. 82°
D. 90°

# A high FMA angle (e.g., 30° or more) is often associated with which facial growth pattern?
A. Anteroposterior growth pattern
B. Horizontal growth pattern
C. Vertical growth pattern
D. Neutral growth pattern

# Which of the following describes a normal skeletal Class I relationship according to cephalometric analysis?
A. Wit's appraisal with point B anterior to point A
B. ANB angle between 0° and 4°
C. ANB angle of 5°
D. SNA=80° and SNB=76°

Which of the following cephalometric parameters suggest skeletal class III malocclusion?

 # Which of the following cephalometric parameters suggest skeletal class III malocclusion?
1. ANB is less than 0 degree
2. SNA= 84 degrees
3. SNB=82 degrees
4. Wit’s appraisal shows point A before point B
5. FMA is 40 degrees (INICET 2025)
A. 1, 4 and 5
B. 1 and 3
C. 2, 4 and 5
D. 3, 4 and 5



The correct answer is B. 1 and 3. 

Explanation:

  • 1. ANB is less than  A negative ANB angle indicates that point B (mandible) is anterior to point A (maxilla), which is a classic sign of skeletal Class III malocclusion.

  • 3. SNB=: While the average SNB is around 80 degrees, an SNB of 82 degrees indicates a more protrusive mandible relative to the cranial base, which is consistent with a Class III tendency (especially if SNA is normal or reduced). In contrast, SNA=84 degrees (option 2) suggests a protrusive maxilla, which is typically seen in Class II, not Class III.

  • 4. Wit’s appraisal shows point A before point B: This indicates a Class II skeletal relationship, where the maxilla is anterior to the mandible. For Class III, point B would be anterior to point A.

  • 5. FMA is : FMA (Frankfort Mandibular Plane Angle) indicates the vertical growth pattern. A high FMA (40 degrees is significantly high) suggests a vertical growth pattern or an open bite tendency, but it does not directly indicate a sagittal Class III relationship.

A patient presents with anterior crowding as a result of large size of teeth in comparison to the base of mandible. This will be classified as:

 # A patient presents with anterior crowding as a result of large size of teeth in comparison to the base of mandible. This will be classified as: (AIIMS PG 2020)
A. Primary Crowding
B. Secondary Crowding
C. Tertiary crowding
D. Third degree crowding




The correct answer is A. Primary Crowding.

Explanation:

Primary Crowding refers to crowding that arises due to a disproportion between the size of the teeth and the size of the jawbones. In this case, the patient has large teeth relative to a smaller mandible, leading to anterior crowding. This is often genetic in origin and present even before all permanent teeth have erupted.

Secondary Crowding typically develops later, often due to factors like premature loss of primary teeth, leading to mesial migration of posterior teeth and a reduction in arch length for the erupting permanent teeth.

Tertiary Crowding (also known as late adult crowding) usually occurs in late adolescence or early adulthood, often involving the lower anterior teeth, and its exact etiology is multifactorial but can involve late mandibular growth, mesial drift, and eruption of third molars.

Third-degree crowding is not a standard classification of crowding etiology; rather, crowding is often quantified as mild, moderate, or severe, sometimes with degrees (e.g., in millimeters of discrepancy), but not as "first, second, or third degree" in terms of cause.