OMSB Orthodontist (OEORDNT) study materials
OMSB Orthodontist (OEORDNT) study resources

OMSB Orthodontist (OEORDNT) study plan

OMSB Orthodontist (OEORDNT) · Give each week a clear focus.

8 weeks · About 7 hours per week

Week 1

Orthodontic Diagnosis and Treatment Planning & Fixed Appliance Biomechanics and Treatment

  • Build a one-page diagnostic checklist covering skeletal, dental, soft-tissue and airway assessment, then apply it to 10 simulated cases

  • Classify 15 cephalometric values (SNA, SNB, ANB, Wits, MP-SN, U1-SN, IMPA) as normal, increased or decreased and state the clinical implication of each

  • Map the six Angles classifications plus subdivision and canine relationship to appliance selection decisions

  • List the biomechanical force systems (intrusive, extrusive, retractive, protrusive) and match each to the tooth movement it produces

Your checkpoint

A written diagnostic decision tree (one page per major malocclusion type) with 10 worked case vignettes showing problem list, diagnosis and appliance rationale

Week 2

Fixed Appliance Biomechanics and Treatment & Orthodontic Diagnosis and Treatment Planning

  • Explain force magnitude, moment-to-force ratio and center of resistance effects for intrusion, retraction and torque control

  • Compare bracket prescription systems (Roth, MBT, Andrews) and justify prescription choice for three different malocclusions

  • Describe anchorage classification, and select temporary anchorage device vs. conventional anchorage for five scenarios with reasoning

  • Outline wire sequence progression and the mechanical rationale for each archwire stage

Your checkpoint

A biomechanics summary sheet linking each force system to expected tooth movement, plus 5 anchorage decision scenarios with written justification

Week 3

Craniofacial Growth and Development & Dentofacial Orthopedics and Orthognathic Surgery

  • Chart the cephalometric and dental changes expected at each cervical vertebral maturation stage

  • Differentiate skeletal Class II and Class III growth patterns and predict the timing window for orthopedic intervention

  • Explain the mechanism of action, indications and limitations of facemask, functional appliance and chin cup therapy

  • Identify which growth-related problems require interceptive treatment versus observation, using 8 vignettes

Your checkpoint

A growth-timing reference table (CVM stage to expected change to treatment window) plus 8 vignettes with interceptive vs. observe decisions

Week 4

Removable and Functional Appliances & Craniofacial Growth and Development

  • Compare removable appliance designs (plate, expansion screw, spring retractor) by indication, activation protocol and patient compliance demands

  • Explain how functional appliances alter mandibular position and dentoalveolar compensation, and state their evidence-based limits

  • Describe expansion protocols for transverse deficiency, including rate, amount and stability expectations

  • Evaluate compliance-monitoring strategies and their effect on removable/functional appliance outcomes

Your checkpoint

A comparison matrix of removable and functional appliances with indication, activation, compliance burden and expected outcome, applied to 6 cases

Week 5

Dentofacial Orthopedics and Orthognathic Surgery & Fixed Appliance Biomechanics and Treatment

  • List presurgical orthodontic objectives and decompensation steps for Class II and Class III orthognathic cases

  • Distinguish Le Fort I, BSSO and genioplasty in terms of skeletal effect, relapse risk and orthodontic preparation

  • Plan surgical vs. camouflage treatment for 6 borderline skeletal cases and defend each choice

  • Describe postsurgical orthodontic finishing priorities and the sequencing of splint removal and elastics

Your checkpoint

A written surgical-orthodontic planning protocol plus 6 borderline case decisions with a defense paragraph each

Week 6

Retention, Relapse and Professional Practice & Orthodontic Diagnosis and Treatment Planning

  • Compare fixed, removable and bonded retainer protocols by indication, duration and failure mode

  • Identify the main causes of relapse (growth, periodontal, occlusal, habit) and the retention strategy that addresses each

  • Explain informed consent, record-keeping and documentation standards relevant to orthodontic practice

  • Describe how to audit treatment outcomes and manage patient complaints or transfer cases

Your checkpoint

A retention protocol document covering retainer selection, duration, review schedule and relapse-risk stratification, plus a consent and record checklist

Week 7

Orthodontic Diagnosis and Treatment Planning & Fixed Appliance Biomechanics and Treatment & Retention, Relapse and Professional Practice

  • Rehearse timed mixed-domain case interpretation using 30 self-written vignettes spanning diagnosis, biomechanics and retention

  • Write structured answers using problem list, diagnosis, treatment plan and retention sections

  • Review and correct weak areas flagged in weeks 1-6 notes

  • Practice explaining treatment risk and alternatives to a simulated patient in plain language

Your checkpoint

A timed 40-question self-test with written answers and a scored error log identifying the three weakest subtopics

Week 8

Craniofacial Growth and Development & Removable and Functional Appliances & Dentofacial Orthopedics and Orthognathic Surgery

  • Consolidate growth, removable/functional and surgical content into a single revision outline

  • Re-test the three weakest subtopics from the week 7 error log and confirm improvement

  • Complete two full timed mixed-domain mock sets under exam conditions

  • Finalize a one-page pre-exam summary of high-yield decision rules

Your checkpoint

Two completed timed mock sets with scores, a corrected error log, and a finalized one-page high-yield summary sheet

Milestones

Week 2: Can explain moment-to-force ratio effects and justify an anchorage choice without notes in under 3 minutes

Week 4: Can state the CVM stage to treatment-window link and pick interceptive vs. observe correctly on at least 7 of 8 vignettes

Week 6: Can produce a complete retention and relapse-risk plan for an unseen case in under 10 minutes

Week 8: Scores at least 70% on both timed mock sets and has closed all three weakest subtopics from the week 7 error log