Anatomi Gigi Incisivus dan Caninus Maxilla

Summary

This video delves into the detailed anatomy of maxillary teeth, specifically focusing on the structure of central incisors, lateral incisors, and canines. It highlights key features such as the shape, root length, and curvatures of these teeth, along with distinct characteristics of their crowns and roots. The video also emphasizes the differences between maxillary incisors and canines, including variations in their mesial and distal surfaces, concave aspects, and marginal ridges. The clear explanation of each tooth's structure provides an insightful guide to dental anatomy.

Takeaways

• 🦷 The maxillary central incisor has one root and one canal, with a length about 1 to 1.5 times the crown length.
• 🔍 The root canal is oval-shaped, and the overall root is conical, which may be straight or curved distally or towards the palatal plate.
• 🪞 The crown of the maxillary central incisor resembles a shovel, with a rounded distoincisal ridge and a sharp mesioincisal angle of 90°.
• 🧒 In young incisors, there are two vertical grooves dividing the labial surface into three lobes called triconodon.
• 🌿 The palatal aspect of the tooth is concave with mesial and distal crests, while the cervical end features a prominent cingulum.
• 📉 The area between the cingulum is concave, known as the foramen caecum, with distal and mesial openings.
• 📏 The cervical curvature on the mesial side is higher than on the distal side.
• 🦷 The lateral maxillary incisor is more convex on the labial aspect compared to the central incisor, with more distinct mesial and distal angles.
• ⏳ The palatal aspect of the lateral maxillary incisor is more concave than the central incisor, with a visible lingual pit and marginal ridges forming a V shape.
• 🦷 The maxillary canine has one root and one canal, with a root length 2 to 2.5 times the crown length, and a single cusp on the labial side.

Q & A

What is the structure of the root canal in the maxillary central incisor?

The maxillary central incisor has one root canal, with an oval-shaped canal and a single root that is typically conical. The root may curve toward the palate or distal side and is around 1 to 1.5 times the length of the crown.

How does the shape of the crown differ on the maxillary central incisor?

The crown of the maxillary central incisor is shaped like a shovel, with a rounded ridge on the distoincisal side and a sharper, 90-degree angle on the mesioincisal side.

What distinctive features are present in the maxillary central incisor of younger individuals?

In younger individuals, the maxillary central incisor often has three lobes, called mamelons, separated by two vertical grooves. These grooves gradually disappear as the tooth wears down.

What unique structures are found on the palatal aspect of the maxillary central incisor?

The palatal side of the maxillary central incisor has a concave shape with mesial and distal crests (crista mesialis and cristalis) near the cervical bulge called the cingulum. Between the cingulum, there is a concave area called the foramen cecum distal and foramen cecum mesial.

How does the curvature of the cervical line differ on the mesial and distal aspects of the maxillary central incisor?

The cervical line on the mesial side of the maxillary central incisor curves more significantly compared to the cervical line on the distal side.

What are the main characteristics of the maxillary lateral incisor's labial surface?

The labial surface of the maxillary lateral incisor is more convex compared to the central incisor. It has a distinct mesial and distal angle which gives it a unique contour.

How does the palatal surface of the maxillary lateral incisor differ from the central incisor?

The palatal surface of the maxillary lateral incisor is more concave than that of the central incisor. It also includes a distinct lingual pit and marginal ridges that form a 'V' shape.

What is the structure of the root in the maxillary canine (caninus)?

The maxillary canine has one root and one root canal, with a root length of approximately 2 to 2.5 times the length of the crown. The labial side is notably convex with a single cusp at the incisal edge.

What differences are observed between the distal and mesial surfaces of the maxillary canine?

The distal surface of the maxillary canine is more concave than the mesial surface, which is more rounded, giving it a unique contour compared to other teeth.

What features are visible on the palatal side of the maxillary canine?

On the palatal side of the maxillary canine, there is a distinct cingulum between two fossa regions (mesial and distal), with three ridges present: the mesial ridge, cristalis ridge, and lateral ridge.