What is a main pit?

Article by: Adriana Duran | Last update: April 10, 2022
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Definition: Fossa formed by the union of the main groove and secondary grooves. Definition: Enamel elevation found mesial and distal to the occlusal face of premolars and molars, being the area where secondary grooves end.

What is a fossa in dental anatomy?

Fossa: It is a rhomboid or angular depression or concavity in the surface of a tooth, generally found on the lingual or palatal aspect of the incisors and on the occlusal surfaces of the posterior ones.

What is the main groove?

The mesiodistal major grooves of each tooth in the arch coincide with this line, but are not straight. The extensions of the main mesiodistal groove towards the mesial or distal edge of each tooth are called the mesial or distal marginal grooves (Figure 3).

What is a major marginal ridge?

Marginal ridges are rounded enamel boundaries that form the mesial and distal margins of the occlusal surfaces of premolars and molars and the mesial and distal boundaries of the lingual surfaces of incisors and canines.

How many dental pits do we have?

There are two major and two minor fossae: the major fossa is the central fossa, more or less triangular and located mesial to the oblique crest, the distal fossa is rectilinear and is located distal to the oblique crest.

23 related questions found

How many sockets does the maxillary first molar have?

These teeth appear in the upper jaw at around six years of age and have a rhomboid-shaped occlusal face, with four cusps separated by two fossae: a central one with two main grooves – one directed towards the vestibular and the other towards the ridge. mesial marginal– and the distal fossa, from which …

How does each tooth occlude?

Each tooth occludes with its opposing tooth correctly. Each tooth has proximal contacts, that is, mesial and distal, with its adjacent teeth. (Except for the last molar, which will only have a mesial contact).

What is the marginal ridge?

Marginal crest or marginal ridge: they are elongated prominences of the enamel that are located on the tooth surfaces where there is greater intensity in the chewing forces, being arranged on the mesial and distal sides of the occlusal surface of the posterior teeth and on the lingual surfaces of the posterior teeth. teeth …

What is incisal ridge?

Definition: Elevation of the enamel found on the palatal-lingual side of the incisors and canines in their cervical third. Definition: Enamel elevation characteristic of incisors and canines that is found on their palatal, lingual, mesial, and distal surfaces.

What is the oblique ridge of the maxillary first molar?

Oblique ridge and marginal ridges: The mesiopalatine and distobuccal cusps meet on the occlusal surface and form a ridge called the oblique or transverse ridge. Depressions of the occlusal face: It presents the fundamental groove that runs from mesial to distal, and two secondary grooves, occlusovestibular and occlusopalatine.

What is the central groove of the tongue?

median groove of the tongue[TA]: sulcus medianus linguae). Superficial groove on the dorsal surface of the tongue, at the level of the midline.

What is jugal groove?

The Jugal Furrows, the Muco-Buccal and the Muco-Labial Furrows, are lined by mucosa with a covering supported on loose connective tissue that is vascularized and highly mobile, which gives this region a more intense red color than that of the mucosa of the cheeks. the lips, of the alveolar mucosa and attached gingiva, with which …

Where is the central sulcus located?

The central sulcus, also known as the Rolando fissure, separates the motor cortex from the sensory cortex, and the frontal lobe from the parietal lobe. From its upper end, it has an anterior, inferior and lateral direction. It presents flexuosities in its route, called knees.

What is pit and groove caries?

Pit and fissure caries, or occlusal caries, is caries that forms on the occlusal surfaces of the posterior teeth (premolars and molars), the chewing area of ​​the molars.

What is mesial and distal?

The word “distal” refers to the interproximal face (also called the interdental face) that is furthest from the mid-axis of the face. “Mesial”, on the other hand, refers to the interproximal aspect closest to the mid-axis.

What is dental concavity?

A cone-shaped, pendent fleshy mass suspended in the oral cavity from the middle of the posterior edge of the soft palate.

What is the vestibular surface of the tooth?

It is the face of the tooth that faces the oral vestibule, that is, outwards. For example, the buccal aspect of the maxillary central incisors would be what we see when someone smiles.

What are the axial faces?

Prism in which the figure of a tooth is included, indicating the cervical plane and the longitudinal axis. The four lateral faces of the prism are the axial faces.

What is the vestibular surface of a tooth?

Incisal Aspect or Occlusal Face: Face of the tooth that performs the action of cutting, tearing or grinding. – Proximal Faces: Mesial Face: Face of the tooth that is closest to the midline. Distal Face: Face of the tooth that is furthest from the midline.

What is a cross flange?

2) TRANSVERSE rims or rims that are between 2 teeth, looking at the interdental space. we have the mesial ones, which are the ones that look at the tooth towards the midline and forward, and the distal ones, which look backwards.

What is the cusp of the teeth?

The dental cusp is the part of the crown of the tooth that ends in a point.

What is Carabelli tubercle?

Introduction: The Tubercle of Carabelli is an anatomical structure located at the junction of the mesial and palatal faces of the PMSP (Permanent Upper First Molar). When its variability in size is present, it can take on cusp-like dimensions.

When do my teeth shake together?

Bruxism is a disorder in which you grind, crunch, or clench your teeth. If you have bruxism, you may unconsciously clench your teeth when you’re awake (daytime bruxism) or clench or grind them while you sleep (nighttime bruxism).

How to prevent dental malocclusions?

Can it be prevented? To prevent malocclusion, it is important to avoid bad habits such as those mentioned above (excessive use of a pacifier or bottle, breathing through the mouth or sucking a thumb).

What is the normal inclination of the teeth?

When the light reflection zone appears over the midbuccal third of the crown, the teeth are in normal inclination. When the light reflection zone is located gingivally or incisally, the teeth are retroclined or proclined, respectively.

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