Question 1

The term for an opening pathway of the jaw that shifts in the midline and disappears later in the opening movement is:

Accepted Answer

The term for an opening pathway of the jaw that shifts in the midline and disappears later in the opening movement is called a deviation, which is characterized by a lateral shift of the mandible during opening. Deflection refers to a similar shift of the mandible, but it does not disappear during the opening movement.

Question 2

A patient should be able to obtain a minimum of a ________-mm opening distance for mandibular movement.

Accepted Answer

D

Question 3

TMJ disorders are a grouping of musculoskeletal conditions that produce pain or dysfunction in the masticatory system.A problem occurring with the TMJ is known as extracapsular.

Accepted Answer

The first statement is true as TMJ disorders are indeed a grouping of musculoskeletal conditions that cause pain or dysfunction in the masticatory system. However, the second statement is false as extracapsular problems occur outside the TMJ, such as in the muscles or nerves of the masticatory system, rather than within the TMJ itself.

Question 4

The dental hygienist should perform a TMJ disorder screening examination for each patient and then:

Accepted Answer

The dental hygienist should perform a screening examination for TMJ disorders and refer the patient to the dentist if signs and symptoms are present. The dentist can then perform a comprehensive evaluation and provide a diagnosis and treatment plan if necessary. The dental hygienist should not provide a preliminary diagnosis or refer the patient based on orthofunction alone.

Question 5

The role of the dental hygienist in treating TMJ disorders is:

Accepted Answer

The role of the dental hygienist in treating TMJ disorders is to recognize the signs and symptoms, record detailed history, and refer the patient to a specialist if necessary. Treatment of TMJ disorders generally requires the expertise of an oral surgeon or a physical therapist who specialize in this area. The dental hygienist can play a vital role in recognizing and ensuring that the patient gets appropriate treatment in a timely manner.

Question 6

The most frequently recommended approach for the treatment of a TMJ disorder is:

Accepted Answer

The answer of The most frequently recommended approach for the...

Question 7

The response of the teeth and periodontium to function can be affected by the:

Accepted Answer

The response of the teeth and periodontium to function is affected by various factors, including the size and shape of the roots, the quantity and quality of the bone, the microbiologic organisms of the plaque biofilm, and oral habits. These factors can influence how well the tooth and surrounding tissues respond to daily functional stresses and can affect the risk for periodontal diseases and other oral health problems. Therefore, all of these factors must be considered when evaluating the health and function of the teeth and periodontium.

Question 8

The symptoms observed in this patient would lead the dental hygienist to consider a condition of:

Accepted Answer

The answer of The symptoms observed in this patient would...

Question 9

What percentage of the population has signs and symptoms of TMJ disorder?

Accepted Answer

The percentage of the population that has signs and symptoms of TMJ (temporomandibular joint) disorder ranges widely, from as low as 5% to as high as 60%. This broad range reflects the variability in study designs, diagnostic criteria, and populations surveyed.

Question 10

After completing the initial history and examination for this patient,the dental hygienist should:

Accepted Answer

Without specific details about the patient's condition, the general protocol after completing an initial history and examination, assuming no contraindications were found, is to proceed with the dental hygiene treatment.

Question 11

The role of the dental hygienist in the detection of occlusal abnormalities and jaw dysfunction is to:

Accepted Answer

The dental hygienist is responsible for recognizing and recording any occlusal abnormalities or jaw dysfunction they observe during examination. However, the hygienist is not typically trained to provide treatment or readjustments for these issues. Therefore, the best choice is option C, which includes recognizing and recording the abnormalities and referring the patient to a specialist for further evaluation and treatment.

Question 12

Oral habits are repetitive:

Accepted Answer

Oral habits that are considered repetitive and potentially harmful typically involve masticatory activities that fall outside the normal range of function, such as bruxism (teeth grinding) or thumb sucking, which can lead to issues like traumatic occlusion or misalignment of teeth.

Question 13

The patient's sore jaw involves only the muscles of mastication and not the TMJ.The description of this condition would then be termed:

Accepted Answer

Since the sore jaw only involves the muscles of mastication and not the temporomandibular joint (TMJ), it is extracapsular, meaning it is outside the joint capsule. Choice A, spasm, may be a possible explanation for the soreness, but it does not specify whether it is related to intracapsular or extracapsular structures. Choice B, arthralgia, refers to joint pain or pain within the joint capsule, which is not the case in this scenario. Choice D, intracapsular, refers to conditions within the joint capsule, which is not applicable in this scenario.

Question 14

A deviation of the mandible to the right on opening suggests:

Accepted Answer

A deviation of the mandible to the right on opening suggests a restriction of the right condyle, as the movement is hindered in that direction.

Question 15

On which of the following is the range of morphofunctional harmony-to-disharmony dependent?

Accepted Answer

The adaptive capacity of the oral system refers to the ability of the mouth to adapt to changes such as dental restorations, orthodontic treatment, or tooth loss. The range of morphofunctional harmony-to-disharmony is dependent on how well the oral system can adapt to these changes. Systemic factors of the patient, the position of the condyles of the TMJ, and the quantity and quality of the bacterial plaque biofilm can all affect oral health and function, but they do not specifically determine the range of morphofunctional harmony-to-disharmony.

Question 16

Please use the following case description to complete the following exercises.
A 34-year-old woman, TJJ, desires dental hygiene treatment to correct light-to-moderate subgingival plaque and calculus.In addition, she states that she is concerned about the wear on her teeth, especially the lower front incisors.Numerous shiny wear facets are present, generalized inflammation is present around the posterior teeth, and slight bone loss is visible on the radiographic images.During the review of her medical and dental history, the patient also complains of headaches and a "sore jaw" in the morning and identifies the headaches and sore jaw as her chief complaint.
-The most likely cause of this patient's chief complaint is:

Accepted Answer

The patient's chief complaint of headaches and sore jaw in the morning are classic symptoms of bruxism, which is the excessive grinding or clenching of teeth, usually during sleep. The wear on her teeth and slight bone loss visible on radiographic images also point to bruxism as the likely cause.

Question 17

The bone loss noted on this patient's radiographic images is probably related to what oral condition?

Accepted Answer

Periodontal disease is a condition that causes bone loss around the teeth due to inflammation and infection of the gums and supporting structures. Trismus is a limited opening of the mouth due to muscle spasm or trauma. Myalgia is muscle pain. Occlusal trauma refers to excessive force on the teeth due to an abnormal bite. While occlusal trauma can lead to bone loss, it is not as common as periodontal disease as a cause of bone loss on radiographs.

Question 18

A deviation is a shift in the midline during opening that disappears at some point later in the opening movement.Deflection is a shift in the midline that becomes greater as the opening movement continues.

Accepted Answer

Both statements accurately describe the terms "deviation" and "deflection" in the context of jaw movement. Deviation refers to a temporary shift that corrects itself during the movement, while deflection indicates a shift that worsens as the movement continues.

Question 19

What is the term for an occlusion that has caused an injury to the teeth,muscles,or joint?

Accepted Answer

The term for an occlusion that has caused an injury to the teeth, muscles, or joint is "traumatic".

Question 20

The term used to describe a single event that results in damage to the masticatory system is:

Accepted Answer

Macrotrauma refers to a single event causing damage, while microtrauma refers to repetitive or ongoing damage. Bruxism and discrepancy are not indicative of a single traumatic event.

Quiz 11: Occlusion and Temporomandibular Disorders