52001

Class II (dental stone) has a higher compressive strength compared to Class I (dental plaster), making it suitable for model making and other applications requiring higher durability.

87636

94019

In patients with poor ridges, the use of 0 degree (non-anatomic) teeth minimizes horizontal forces during chewing, which helps to reduce the movement of the denture base and improves stability. This design is preferred in such cases because it requires less precise jaw alignment and is more forgiving of minor movements compared to teeth with higher cusp angles (like 20 or 33 degrees).

85462

Each of the following statements about local anaesthesia is correct except: Prilocaine is more toxic than lignocaine.

80054

Debulking the tumor by surgery makes the tumor cells re-enter the cell cycle and thus become susceptible to drug therapy: This statement is the most accurate. Surgical removal of a tumor (debulking) can indeed lead to the release of tumor cells into the circulation and may also alter the tumor microenvironment. This can make residual tumor cells more susceptible to chemotherapy, as they may re-enter the cell cycle and become more actively dividing, which is when many chemotherapy agents are most effective.

76957

Widened periodontal ligament space is NOT a positive bone factor. It indicates pathology such as orthodontic movement, trauma, or periodontal disease. Positive bone factors include heavy cortical bone layer (provides strength), dense lamina dura (indicates healthy bone), and normal bone height (adequate support). Widened PDL space suggests compromised support.

30178

Resin cements are known for their excellent adhesion, providing a strong bond to tooth structure and restorative materials.

79693

Fibroadenosis (fibrocystic disease) is a benign condition of the breast. It represents a spectrum of benign breast changes including cysts, fibrosis, and epithelial proliferation. While it may cause discomfort, it is not premalignant and does not significantly increase cancer risk.

79071

Adding a nonionic surfactant to silicone impression materials makes the surface more hydrophilic, allowing for better wetting of soft tissues and improved detail capture.

60756

Gemination is a developmental anomaly in which a single tooth bud attempts to divide, resulting in an enlarged or bifid crown.

Key features of gemination:

Appears as a single large tooth

Usually has one root

May show two root canals

Total number of teeth remains normal when the abnormal tooth is counted as one.