Tooth Histology

• Peritubular dentine is the most mineralized part of dentine, providing significant structural strength. [Q0009]
• Dentinal tubules make up 0.5% of the total dentine surface at a distance of 0.5mm from the pulp, reflecting their density near the pulp. [Q0013]
• The junction between primary and secondary dentine is marked by a resting line, indicating a pause in dentine formation. [Q0014]
• Keratocysts typically have a more aggressive expansion pattern compared to ameloblastomas. [Q3084]
• Yes, ameloblastomas appear as islands of cells with a prominent outer layer of basal cells. [Q3225]
• Yes, ameloblastomas are more common in middle-aged individuals. [Q3226]
• No, ameloblastomas are typically benign but can be locally aggressive. [Q3229]
• Yes, ameloblastomas can appear as islands of epithelium separated by pink collagenous bands. [Q3230]
• Yes, apoptosis can be gene-activated, physiological, or pathological. [Q3291]
• Autophagy is the process responsible for removing damaged organelles and atrophic cells. [Q3325]
• Bone is comprised of compact and spongy bone. [Q3376]
• Osteoblasts and osteoclasts are responsible for bone deposition and resorption, respectively. [Q3377]
• Yes, caseous necrosis is distinctive to foci of tuberculous infections. [Q3419]
• Cellular swelling is often the first manifestation of cell injury. [Q3431]
• Dentigerous cysts can often be mistaken for ameloblastoma due to their similar location. [Q3577]
• Dentigerous cysts are typically located at the angle of the mandible. [Q3578]
• Dentigerous cysts are usually unilocular radiolucent lesions. [Q3579]
• White sponge nevus presents as bilateral thick white patches. [Q3596]
• Enamel lamellae do not extend the entire thickness of the enamel. [Q3668]
• Enamel pearls are occasionally found in the cervical margins and bifurcation areas. [Q3670]
• Enamel spindles do not extend to the surface of the enamel. [Q3671]
• Enamel tufts extend from the enamel-dentine junction into the inner third of the enamel. [Q3672]
• Enamel tufts occur at 100 micron intervals. [Q3673]
• Eukaryotic cells are typically greater than 5 microns. [Q3692]
• Eukaryotic cells have complex structures like the endoplasmic reticulum and Golgi apparatus. [Q3693]
• Exfoliative cytology can be used to diagnose certain types of cancer. [Q3697]
• Exfoliative cytology is reliable when used in conjunction with other diagnostic tests. [Q3698]
• Cellular atypia and mitotic figures are features of epithelial dysplasia. [Q3716]
• Haematoxylin stains tissues blue, while eosin stains them red. [Q3858]
• Immunostaining relies on antibody-antigen binding to target specific molecules. [Q4037]
• A 10-gauge needle is not typically used in fine needle aspiration biopsy. [Q4078]
• Fresh tissues in frozen sections are typically frozen at much lower temperatures, around -20°C to -30°C. [Q4079]
• Increased cytosolic calcium can lead to cellular death by activating various cell death pathways. [Q4147]
• No, inflammation is typically a reaction to necrosis, not apoptosis. [Q4157]
• Yes, keratocysts can cause resorption or displacement of adjacent teeth, but it is rare. [Q4214]
• Liquefactive necrosis can be triggered by both bacterial and fungal infections. [Q4256]
• Liquid nitrogen is used to freeze tissue for frozen section analysis. [Q4257]
• Immunostaining methods can detect lymphomas, pemphigus, and pemphigoid. [Q4285]
• Megamitochondria are commonly observed in liver cells. [Q4325]
• Sclerotic dentine is caused by chronic tooth wear. [Q4343]
• Hutchinson’s incisors and mulberry molars are dental defects caused by congenital syphilis. [Q4358]
• Necrosis can cause both enzyme digestion of the cell and denaturation of proteins. [Q4413]
• Necrosis can be caused by both loss of blood supply and toxins leading to cellular changes. [Q4414]
• Many malignant neoplasms have genetic abnormalities. [Q4814]
• Squamous cell carcinoma is diagnosed through histopathological examination of a biopsy. [Q4827]
• The basal cells in Ameloblastoma exhibit reversed polarity. [Q4921]
• Biopsy specimens are commonly preserved in 10% formal saline for histological examination. [Q4928]
• Type I collagen is found in dentinal tubules and provides structural support. [Q6069]

Gingival and Periodontal Histology

• Acellular cementum covers the root adjacent to the dentine. [Q3152]
• Granulomatous inflammation is characterized by the presence of macrophages. [Q3427]
• Cellular cementum is typically found in the apical area overlying the acellular cementum. [Q3428]
• Yes, chronic desquamative gingivitis can be associated with skin lichen planus. [Q3460]
• Acantholysis describes the separation of epithelium from the connective tissue. [Q3516]
• Delayed healing for weeks often indicates an infection. [Q3554]
• Epulis is a characteristic of gingival hyperplasia. [Q3684]
• Fibrous epulis is a nodule of granulation tissue. [Q3722]
• Mineralizing epulis is another name for peripheral ossifying fibroma. [Q4345]
• Cementum can be either cellular or acellular, depending on its location and function. [Q4949]

Salivary Gland Histology

• Decreased acinar cells are a characteristic finding in acinar atrophy. [Q3044]
• Fordyce spots are typically found on the labial and buccal mucosa. [Q3763]
• Fordyce spots are cream-colored, occasionally prominent, and very numerous. [Q3764]
• Fordyce’s spots are ectopic sebaceous glands, not minor salivary glands. [Q3765]

Neural and Vascular Histology

• Carotid body tumors can cause either unilateral or bilateral swelling at the carotid bifurcation. [Q3415]
• A thyroglossal duct cyst is located in the middle of the neck just above the thyroid gland. [Q3545]
• Myocardial necrosis is typically coagulative due to ischemia. [Q4404]
• Prions primarily affect neural tissue. [Q4670]