23719

92011

In an impression of the edentulous mandibular arch, all of the following anatomic landmarks will appear as depressions or grooves, except retromylohyoid space.

66619

Phosphoric acid concentrations between 20% and 30% are commonly used for acid etching of enamel to create a roughened surface for mechanical bonding of restorative materials.

38185

Long-term functional changes around teeth can lead to osteoporosis in the alveolar bone, which is characterized by a decrease in bone density. This can affect the support of the teeth. 

99377

Asymptomatic mixed radiopaque and radiolucent lesions found at the lower incisor region of a middle-aged woman may be cementoma.

10516

An Ellis Class IV crown fracture is characterized by the loss of a significant portion of the crown, often such that the pulp may be exposed. This severe type of fracture requires immediate attention to prevent further damage to the tooth
Ellis Class IV fractures are the most severe form of crown fractures. They extend below the gingival margin and involve the enamel, dentin, and often the pulp. The pulp may be exposed, making it a dental emergency.

75184

Calcium hydroxide is used in cases of rampant caries and unhygienic oral conditions due to its antibacterial and tissue-dissolving properties.

21307

Dislocation is treated by forcing the mandible downwards and backwards.

18827

A measure that has validity is necessarily reliable, as reliability is a prerequisite for validity. However, a measure that is reliable does not necessarily mean it is valid. Validity refers to the degree to which a measurement tool accurately measures what it is intended to measure. Reliability is the consistency of the results produced by the tool.

14914

In this clinical scenario, the patient has a completely edentulous maxillary arch and a partially edentulous mandibular arch (missing molars bilaterally). Constructing only a maxillary complete denture against natural mandibular anterior teeth and missing posterior teeth can lead to several complications. The unopposed maxillary denture would put excessive stress on the remaining mandibular anterior teeth, potentially causing them to splay, migrate, or experience accelerated bone loss. Additionally, the lack of posterior occlusion can lead to an unstable bite and functional problems. Therefore, it is crucial to restore the occlusion in both arches simultaneously to ensure proper function, stability, and long-term oral health.