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Orthodontic Indices

This course provides an in-depth analysis of occlusal and epidemiological indices used in orthodontics to quantify malocclusion severity, treatment need, complexity, and treatment outcomes. Learners will examine the essential properties of an ideal index and explore widely used standardized systems, including the Index of Orthodontic Treatment Need (IOTN), Index of Complexity, Outcome, and Need (ICON), Summer’s Occlusal Index, and the Peer Assessment Rating (PAR) index.

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No Certificate / Course on Audit Track

About Course

This course provides a comprehensive introduction to Orthodontic Indices, focusing on their properties, assessment methods, and clinical applications. Learners will explore commonly used indices including IOTN, ICON, Summer’s Occlusal Index, and PAR Index for evaluating malocclusion and orthodontic treatment needs. The course explains how these indices support standardized assessment, treatment planning, and outcome evaluation in orthodontic practice. By the end, learners will understand the practical application of orthodontic indices in clinical decision-making.

Authorship and Attribution

This course has been curated by Riphah International University faculty and staff using publicly available third-party content and Open Educational Resources (OER) for self-paced learning. Learners will engage with curated open-access materials to achieve the course learning outcomes. All third-party content is used under open-access or fair-use policies, while any original materials are developed specifically for this learning experience.

Source and Credits:

  • Instructor: Youtube MICP
  • Provider: YouTube (@youtubemicp8381)
  • License: Standard YouTube license

What You'll Learn

By the end of this course, you will be able to:

  • List the essential properties of an ideal index (e.g., validity, reliability, objectivity, simplicity, sensitivity).
  • Discuss the properties, components, and clinical applications of the IOTN (Index of Orthodontic Treatment Need).
  • Describe the components and scoring system of ICON (Index of Complexity, Outcome, and Need).
  • Explain in detail the structure, developmental stages, and scoring criteria of Summer’s Occlusal Index.

Prerequisites

To be successful in this course, learner should be able to:

  • Classify dental arch relationships, tooth displacement, and occlusal anomalies using standard clinical definitions.
  • Identify key dental and skeletal landmarks on diagnostic study casts.
  • Understand basic clinical measurements (e.g., overjet, overbite, crossbite, contact point displacement).

Who Can Take This Course?

This course is designed for:

  • Dental Students: Learning to recognize the requirements of an ideal index, assess treatment need, and understand standardized occlusal scoring systems.
  • Orthodontic Residents (PGs): Mastering pre- and post-treatment PAR scoring, IOTN categorization, ICON complexity weights, and clinical audit methodologies.
  • Public Health Dentists: Utilizing objective occlusal indices to evaluate population-level treatment needs and optimize health resource allocation.

Course Outline

Properties and Applications for Orthodontic Indices

Orthodontic Indices: IOTN, ICON, Summer’s Occlusal Index, and PAR Index (Video)

Skills You Will Gain

Index Selection Skills IOTN Assessment Knowledge ICON Index Application Summer’s Index Assessment PAR Index Evaluation Malocclusion Assessment Skills Treatment Need Evaluation Clinical Decision Making

Course Information

Duration

Less Than 1 Hour 

Course Information

Difficulty Level

Beginner

Learning Mode

Fully Online (Asynchronous)

Learning Type

Self Paced

Language

English Only

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Instructor/Curator

Course Instructor