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What is MP in dentistry?

Published in Dental Terminology 2 mins read

In dentistry, MP stands for maximum protrusive. It refers to the furthest distance the mandible (lower jaw) can move forward from its centric position. This measurement is crucial in understanding and diagnosing various temporomandibular joint (TMJ) disorders and planning certain dental treatments.

Understanding Maximum Protrusive Movement

The maximum protrusive movement (MP) is a key measurement when evaluating mandibular range of motion. Here’s why it’s important:

  • Diagnostic Tool: Measuring MP, along with maximum left (ML) and maximum right (MR) lateral excursions of the mandible, helps dentists assess the health and function of the TMJ.
  • Treatment Planning: MP is considered when planning orthodontic treatments, prosthetic restorations, and fabricating oral appliances.
  • Monitoring Progress: These measurements can monitor treatment progress and identify any limitations or changes in mandibular movement.

How is MP Measured?

Dentists use tools such as a millimeter ruler or digital calipers to measure the maximum protrusive movement of the mandible. The patient is instructed to move their lower jaw as far forward as possible. The distance between the reference point on the incisors of the mandible and the maxillary incisors when the mandible is at its most forward is measured.

Importance of Measuring Mandibular Movements

The three crucial measurements (MP, ML, and MR) provide a comprehensive overview of the mandible’s range of motion. This information helps to:

  • Identify Limitations: Detect any restrictions in jaw movement that may indicate an underlying TMJ problem.
  • Determine Symmetry: Assess if the movement is symmetrical on both sides of the jaw.
  • Plan Treatment: Guide dentists in creating custom treatment plans to improve function and relieve symptoms associated with TMJ disorders.
Measurement Description
MP Maximum distance the mandible moves forward
ML Maximum distance the mandible moves to the left
MR Maximum distance the mandible moves to the right

By understanding the significance of MP and its relationship to ML and MR, dentists can better diagnose and treat TMJ disorders, improving patient comfort and function.