Oral Structures and Variations from Normal

Oral Cancer Detection: Emphasizing the critical importance of detecting oral cancer early, as exemplified by a personal anecdote of a random person identifying oral cancer, highlighting that early detection can be life-saving.
Comprehensive Examination: The discussion focuses on understanding different oral structures and identifying variations from their normal appearance, laying groundwork for further definitions and practical applications.

Material Choice: Patients with metal oral piercings (e.g., in the capillary) should be encouraged to switch to plastic ones.
Reduced Damage: Plastic piercings are significantly less damaging to oral tissues compared to metal.
Infection Risk: Infected piercings are a serious concern due to the presence of the lingual artery running through the middle of the tongue, posing risks of severe bleeding or infection complications.

Philtrum Variations: The philtrum can exhibit either a unilateral (one side) or bilateral (both sides) appearance.
Cleft Palate Example: A patient in their seventies or early eighties was mentioned who had an unrepaired cleft palate, resulting in a legitimate hole extending from the palate directly into the nasal cavity.

Examination Technique: During patient examination, individuals are asked to extend their tongue, allowing for inspection of the ventral (undersurface) of the tongue.
Commissures: The corners of the lips (commissures) are also checked to ensure no abnormalities were missed during tissue stretching.
Lip Pit: A specific lower image in the presentation depicted a lip pit as a variation.

Description: Tori are excess bony growths that maintain a gingival covering, making them appear similar to surrounding tissue.
Prevalence: Mandibular tori are very common, found in over $50\%$ of patients, often without significant concern unless they are excessively large.
Challenges in Practice: Very large tori make placing X-ray sensors difficult.
Patient Discomfort and Complications:
- Eating: Large tori can cause discomfort and potential injury when eating crunchy foods (e.g., crusty bread, chips) as the food can stab the tori.
- Food Traps: Food debris can easily get trapped around tori and be difficult to remove, leading to oral malodor (bad breath), infections, or other worse conditions.
Home Care Education: Patients with tori require education on specific cleaning methods, such as using a water pick or a syringe to flush out trapped food debris.
Removal as an Option (Yes and No):
- Surgical Process: Removal involves very painful surgery, cutting out bone, and then grafting tissue to cover the exposed area.
- Recurrence: For some patients, the tori simply grow back after removal, making the painful procedure potentially ineffectual.
- Case-by-Case Basis: The decision for removal is highly dependent on the individual patient's symptoms and discomfort levels.
Impact on Prosthetics: Tori become a major issue when fitting removable prosthetics, such as full dentures, as they can interfere with proper seating and stability.

Fungiform Papillae: These are the bigger, red taste buds that resemble strawberries on the tongue surface.
Circumvallate Papillae: These are larger taste buds located at the back of the tongue.

Appearance: The edges of the tongue appear scalloped, resembling a seashell, following the contours of the teeth.
Normal vs. Abnormal: A normal tongue should be flat and straight around its edges.
Causes: This condition is typically indicative of clenching or grinding habits, where the individual pushes their tongue out while clenching.
Associated Conditions: Often seen alongside linea alba (lines inside the cheek from sucking in cheeks while clenching).

Appearance: Characterized by red and white patches that vaguely resemble a map or globe.
Presentation: Can be constant or appear as flare-ups, often exacerbated by acidic foods (e.g., fruits, tomatoes).

Appearance: Features grooves or fissures on the tongue surface.
Contributing Factors: More common in older individuals and those with certain types of developmental disabilities.
Correlation: While there's a correlation, not everyone with these factors will develop a fissured tongue.

Stippling: Healthy gingiva exhibits a stippled appearance, likened to the 'orange peel' texture with tiny indentations.
Disease Indicator: The disappearance of this stippling, accompanied by redness and puffiness, indicates a disease state and a breakdown of connective tissue.

Description: Small, tiny red dots on the palate, representing bruising.
Seasonal Increases: Noted to be more common around certain times of the year (e.g., Valentine's Day).
Clinical Concern: While generally less concerning in consenting adults, petechia in young people is a significant concern that requires investigation.
Other Causes: Can also result from vomiting.
Social Implications: Can lead to awkward conversations, especially among classmates.

Location and Function: Frenums are folds of tissue that can sit between teeth, potentially causing them to separate (diastema).
Frenectomy: The lower frenum in adults may be surgically clipped (frenectomy) for periodontal reasons.
Removal Example: A patient's buckle tie (buccal frenum) was removed, illustrating that frenums can sometimes be completely excised rather than just clipped. This was mentioned in the context of early orthodontic treatment.

Appearance: Habitual cheek biting, often due to nervousness, can cause the inside of the cheek to appear like raw hamburger or a large, usually circular, patch of white and red tissue.
Location: Typically more prevalent in the anterior third of the cheek.
Distinction from Linea Alba: This differs from the straight line appearance of linea alba, which is caused by the clenching motion.

Examination: A finger sweep is performed across the entire hard palate to check for normal anatomy, including the palatal rugae and incisive papilla.
Incisive Papilla: This structure is often susceptible to burns, commonly referred to as a 'pizza burn' due to hot, sticky foods like melted cheese.

Caution: The soft palate should generally not be touched during examinations to avoid triggering the gag reflex.

Appearance: Shingles lesions in the mouth can resemble multiple 'chip stabs' with a distinct red appearance.
Key Characteristic: Shingles only impacts half of the body at a time and does not cross the midline.
Location Variability: Can appear in various locations, such as across the rib cage (recurrent in a 30-year-old relative), on the face, or inside the mouth.
Recurrence: Individuals can experience shingles multiple times, as evidenced by a person who had it five times by age $30$ on their rib cage.