# ABO - American Board of Orthodontics — Practice Test Geeks
# https://practicetestgeeks.com/llms/american-board-of-orthodontics-abo.txt
# Updated: 2026-06-09

> Free ABO - American Board of Orthodontics practice tests and study guides. Free American Board of Orthodontics practice test with questions and answer explanations. Prepare for the 2026 May exam with instant scoring. Language: English. Region: US.

## Overview

- **Category**: ABO - American Board of Orthodontics
- **Main page**: https://practicetestgeeks.com/american-board-of-orthodontics
- **Language**: English | **Region**: US
- **Practice tests**: 25 tests, 175 questions total
- **Exam simulation**: Full-length 240-question timed exam (300 min, 75% pass mark)
- **Study guides / articles**: 4 published

## Exam Simulations (Full-Length, Timed, Scored)

Simulates real exam conditions: question count, time limit, passing score, domain weighting.

- [ABO Written Exam](https://practicetestgeeks.com/abo/exam) — 240 questions, 300 min, 75% pass
  The American Board of Orthodontics (ABO) Written Examination assesses orthodontic residents and practitioners on biomedical sciences, general clinical

## Practice Tests (25 available)

- [ABO Professional Knowledge 1](https://practicetestgeeks.com/free-abo-professional-knowledge-questions-and-answers) (9 questions)
- [ABO (Reading) 1](https://practicetestgeeks.com/free-abo-reading-questions-and-answers) (9 questions)
- [ABO Orthodontic Diagnosis and Treatment Planning 5](https://practicetestgeeks.com/abo/questions/orthodontic-diagnosis-and-treatment-planning-5) (7 questions)
- [ABO Orthodontic Diagnosis and Treatment Planning 2](https://practicetestgeeks.com/abo/questions/orthodontic-diagnosis-and-treatment-planning-2) (7 questions)
- [ABO Orthodontic Diagnosis and Treatment Planning 3](https://practicetestgeeks.com/abo/questions/orthodontic-diagnosis-and-treatment-planning-3) (7 questions)
- [ABO Orthodontic Biomechanics 4](https://practicetestgeeks.com/abo/questions/orthodontic-biomechanics-4) (7 questions)
- [ABO Orthodontic Biomechanics 5](https://practicetestgeeks.com/abo/questions/orthodontic-biomechanics-5) (7 questions)
- [ABO Orthodontic Biomechanics 2](https://practicetestgeeks.com/abo/questions/orthodontic-biomechanics-2) (7 questions)
- [ABO Orthodontic Biomechanics 3](https://practicetestgeeks.com/abo/questions/orthodontic-biomechanics-3) (7 questions)
- [ABO Professional Knowledge 4](https://practicetestgeeks.com/abo/questions/professional-knowledge-4) (7 questions)
- [ABO Professional Knowledge 5](https://practicetestgeeks.com/abo/questions/professional-knowledge-5) (7 questions)
- [ABO Professional Knowledge 2](https://practicetestgeeks.com/abo/questions/professional-knowledge-2) (7 questions)
- [ABO Professional Knowledge 3](https://practicetestgeeks.com/abo/questions/professional-knowledge-3) (7 questions)
- [ABO Cephalometric Analysis and Radiographic Interpretation 3](https://practicetestgeeks.com/abo/questions/cephalometric-analysis-and-radiographic-interpretation-3) (7 questions)
- [ABO (Reading) 4](https://practicetestgeeks.com/abo/questions/reading-4) (7 questions)
- [ABO Cephalometric Analysis and Radiographic Interpretation 2](https://practicetestgeeks.com/abo/questions/cephalometric-analysis-and-radiographic-interpretation-2) (7 questions)
- [ABO Cephalometric Analysis and Radiographic Interpretation 1](https://practicetestgeeks.com/abo/questions/cephalometric-analysis-and-radiographic-interpretation) (7 questions)
- [ABO (Reading) 5](https://practicetestgeeks.com/abo/questions/reading-5) (7 questions)
- [ABO (Reading) 3](https://practicetestgeeks.com/abo/questions/reading-3) (7 questions)
- [ABO (Reading) 2](https://practicetestgeeks.com/abo/questions/reading-2) (7 questions)
- [ABO Orthodontic Diagnosis and Treatment Planning 4](https://practicetestgeeks.com/abo/questions/orthodontic-diagnosis-and-treatment-planning-4) (7 questions)
- [ABO ABO Retention and Stability 3](https://practicetestgeeks.com/abo-abo-retention-and-stability-3-practice-test) (6 questions)
- [ABO ABO Dentofacial Orthopedics 1](https://practicetestgeeks.com/abo-abo-dentofacial-orthopedics-practice-test) (6 questions)
- [ABO ABO Growth and Development 1](https://practicetestgeeks.com/abo-abo-growth-and-development-practice-test) (6 questions)
- [ABO ABO Orthodontic Appliances and Mechanics 1](https://practicetestgeeks.com/abo-abo-orthodontic-appliances-and-mechanics-practice-test) (6 questions)

## Articles & Study Guides

- [Free ABO MCQ Questions and Answers](https://practicetestgeeks.com/free-abo-mcq-questions-and-answers)

## Reference Pages

- [ABO Practice Test PDF (Free Printable 2026)](https://practicetestgeeks.com/abo/abo-practice-test-pdf)
- [ABO Practice Test Video Answers](https://practicetestgeeks.com/abo-practice-test-video-answers)

## About Practice Test Geeks

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