Related Experiment Video
Updated: Jul 1, 2026

A Protocol for Comprehensive Assessment of Bulbar Dysfunction in Amyotrophic Lateral Sclerosis (ALS)
Published on: February 22, 2011
Malocclusion traits and articulatory components of speech
1Department of Orthodontics, University of Kuopio, Finland.
Abstract:
The aim here was to determine the effects of particular types of malocclusion including the effects of combinations of different occlusal anomalies on speech articulation. Occlusal anomalies and articulatory speech disorders, a diagnosis based on errors in place of articulation, were determined for 451 students, mean age 23 years. The present results showed that risk ratios for producing consonants too far anteriorly was greater by 4.5 times for subjects with mesial occlusion, 3.7 times for those with mandibular overjet, 3.4 times for subjects with incisal open bite and 1.7 for those with lateral cross-bite compared to individuals without those occlusal anomalies. This study suggests that incisal open bite alone is rarely associated with articulatory speech disorders, but if present they tend to be mild. Incisal open bite combined with other occlusal anomalies, especially with mesial occlusion, is related to more severe misarticulations of consonants.
Related Concept Videos
The Hyoid Bone
Larynx
Anatomy of the Larynx
The larynx consists of various components, including cartilage, muscles, and vocal cords. Its structure includes three large unpaired cartilages—the thyroid, cricoid, and epiglottis—and three smaller paired cartilages—the arytenoids, corniculates, and...
Oral Cavity
Teeth: The teeth are the hardest structures in our bodies. Humans have two sets of teeth throughout their lifetime: deciduous (baby) teeth and permanent teeth. Each tooth consists of several parts: the crown (visible part), the root (embedded in the jaw), enamel (hard outer...
Tongue
Anatomical Position in the Oral Cavity
The tongue is located within the oral cavity, also known as the mouth. It is attached to the floor of the mouth by a fold of mucous membrane called the...
Tooth Anatomy
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or grinding food.
Assessment of the Mouth
Mouth Inspection
The inspection begins with visually examining the mouth for symmetry, color, and size.

