Explanation: This statement is false because if the developing time is too long, it typically results in an overexposed radiograph, which appears too dark. However, if the developing time is too short, it can lead to an underexposed radiograph, which appears too light.

Hyperparathyroidism is a condition characterized by an overproduction of parathyroid hormone (PTH), which leads to increased bone resorption and changes in bone density. The radiographic features associated with hyperparathyroidism include:

• Loss of Lamina Dura: The lamina dura is the thin layer of dense bone that lines the tooth socket (alveolus). In hyperparathyroidism, the loss of lamina dura can be observed due to the increased osteoclastic activity and bone resorption.

• Ground Glass Appearance: This refers to a radiographic appearance of bone that looks hazy or "ground glass" rather than having a clear, well-defined structure. This appearance is due to the alteration in bone density and the presence of fibrous tissue replacing normal bone.

Other Options:

1. Osteogenesis Imperfecta: This condition is characterized by brittle bones due to a defect in collagen formation. Radiographically, it may show thin cortices and osteopenia, but not typically a ground glass appearance.

2. Osteopetrosis: This is a condition of excessive bone density due to impaired osteoclast function. Radiographically, it shows increased radiopacity (dense bones) rather than a ground glass appearance.

3. Osteitis Deformans (Paget's Disease): This condition is characterized by disorganized bone remodeling. Radiographically, it can show a "cotton wool" appearance and enlarged bones, but it does not typically present with a loss of lamina dura or a ground glass appearance in the early stages.

The base of the skull can be viewed by both Towne's projection and Submentovertex.

Fogging of X-ray film affects the contrast of an intraoral film because it increases film density resulting in an overall gray radiograph.

The scientist who discovered that caries was the most common cause of extraction of teeth was Allen.