Iran Dental Specialty Board - Orthodontics study guide
Iran Dental Specialty Board - Orthodontics · Work through your exam, one topic at a time.
The Iranian specialty board in orthodontics (بورد تخصصی ارتودنسی) is the national credential that a dentist holding a specialty degree in orthodontics must obtain to be recognized as a board-certified orthodontist in Iran. It is aimed at graduates of accredited Iranian orthodontic residency programs who are completing their specialty training and preparing to practice, teach, or take hospital and academic posts. The Iran Dental Specialty Board - Orthodontics study guide has 12 sections and about 3,306 words.
01Growth and Development of the Craniofacial Complex
Growth timing, sites, and mechanisms of the cranial vault, cranial base, maxilla, and mandible, and how these govern treatment planning windows. Growth follows a cephalocaudal and neural-to-somatic gradient; the cranial vault and base complete much of their growth earlier than the mandible.
335 words, about 2 min02Orthodontic Diagnosis and Treatment Planning
Building a prioritized problem list from history, extraoral and intraoral examination, models, and radiographs, then converting it into a defensible plan with alternatives and consent. Record a problem list in priority order: function/airway, periodontal and caries risk, skeletal, dental, soft tissue/smile, patient expectations.
283 words, about 1 min03Cephalometrics and Imaging
Landmark identification, standard analyses, and when to move from 2D imaging to CBCT or other modalities, plus superimposition for growth and treatment change. Landmarks: Sella, Nasion, A-point, B-point, ANS, PNS, porion, orbitale, gonion, menton, gnathion, pogonion; errors at porion and orbitale are the most common.
282 words, about 1 min04Biomechanics and Orthodontic Tooth Movement
Force systems, centers of resistance, moment-to-force ratios, anchorage, friction, and the biology of PDL response. The center of resistance of a single-rooted tooth lies roughly at 0.4 of root length from the alveolar crest; for the maxillary incisor it is near the apex region.
283 words, about 1 min05Orthodontic Materials and Appliances
Wire alloys, bracket and adhesive systems, elastomeric behaviour, and how material properties dictate wire sequencing and appliance choice. Stainless steel (18-8) is stiff, strong, and work-hardenable; it is used for finishing and sliding arches.
284 words, about 1 min06Fixed and Removable Appliance Therapy
Appliance design, bracket placement and prescription, mechanics for space closure, and the limits of removable and functional appliances. Straight-wire appliances move the bends into the bracket; the prescription (Roth, MBT, Andrew's) encodes tip, torque, and in-out values.
278 words, about 1 min07Early and Interceptive Orthodontics
When to screen, which problems justify early intervention, and what the evidence says about two-phase treatment. First orthodontic screening by age 7 (AAO/AAPD), which allows interception of crossbites, functional shifts, severe crowding, and airway concerns.
300 words, about 2 min08Orthognathic Surgery and Dentofacial Orthopedics
Indications, presurgical orthodontics, surgical options, stability, and the teamwork required for combined cases. Indications: discrepancies beyond orthodontic camouflage, severe asymmetry, vertical excess, airway/OSA, and patient preference after informed discussion.
263 words, about 1 min09Debonding and Retention
Safe appliance removal, enamel protection, and evidence-based retention planning, including long-term monitoring. Debond with controlled force and proper plier placement; ceramic brackets require special removal to avoid enamel fracture.
267 words, about 1 min10Orthodontics and Periodontics / Restorative Interrelationships
How tooth movement interacts with periodontal attachment and restorative needs, and how to sequence interdisciplinary care. Biologic width ≈2.04 mm (junctional epithelium plus connective tissue attachment); intrusion can encroach on it and cause recession or pocketing.
241 words, about 1 min11Temporomandibular Disorders and Occlusion
The evidence linking occlusion and orthodontics to TMD, diagnostic classification, and conservative management. The evidence does not support a causal link between orthodontic treatment and TMD; orthodontics neither causes nor reliably cures TMD.
243 words, about 1 min12Evidence-Based Practice, Research Methods, and Ethics
Critical appraisal, study design, biostatistics, and the ethical conduct of orthodontic practice and research. The PICO question frames clinical evidence; the hierarchy runs from systematic reviews and RCTs down through cohort, case-control, and case series.
247 words, about 1 min