38059

According to the text, the mixing time for zinc phosphate cement is about 1-15 minutes.

28161

Failure of prostheses cemented with zinc polycarboxylate typically occurs at the interface between the cement and the prosthesis, often due to inadequate adhesion to the prosthesis material compared to the strong bond formed with the tooth structure.

39374

Pierre-Robin syndrome does NOT typically present with Class III malocclusion. Instead, it is characterized by micrognathia (underdeveloped mandible) leading to Class II malocclusion with mandibular retrusion. Cleft palate, cleidocranial dysplasia, and craniofacial dysostosis (Crouzons syndrome) can all present with Class III malocclusion due to maxillary hypoplasia or relative mandibular prognathism in these conditions.

91701

Pulsus paradoxus is an exaggerated decrease in systolic blood pressure during inspiration, which can occur in patients with airflow obstruction conditions such as emphysema and asthma. These conditions can lead to increased intrathoracic pressure swings during respiration, which affects the cardiac output and arterial pulse amplitude.

93082

Osseograft is a bone graft (promotes bone growth). In ankylosis surgery, we want to PREVENT bone growth between the segments, so soft tissue interposition (fat, fascia) is used.

89976

The "Postage stamp" method is a technique of bone removal in transalveolar extraction. Multiple small perforations are made in the buccal bone, creating a pattern resembling postage stamp perforations, which allows for easier bone removal and better access to impacted teeth.

69400

68900

Lamina dura is lost or partially lost in hyperparathyroidism.

21505

Hyaluronidase is an enzyme that breaks down hyaluronic acid, a component found in the extracellular matrix. When added to a local anesthetic, it increases the permeability of tissues, facilitating enhanced diffusion of the anesthetic agent into the surrounding areas. This can broaden the spread of the anesthetic, allowing for a more effective and comprehensive blockade of nerve signaling.

16267

Penicillamine is used as an antidote for copper poisoning. It works by binding to copper ions and facilitating their removal from the body. It is also used for the treatment of Wilson’s disease.