Ideal occlusion and malocclusion

Definition of ideal occlusion: the normal anatomical contact between teeth, more technically it is the relationship between the maxillary(upper) and mandibular(lower) teeth when they approach each other, as occurs during chewing or at rest.

Ideal occlusion also known as a perfect arrangement between teeth without defect, features of ideal occlusion which is smooth guidance contacts, no cuspal incline contacts, multiple simultaneous contacts, no crowding, spacing, rotations and correct crown inclination and angulation and a flat or slightly upwards curve of spee.
The normal anatomical contact between arches: The normal anatomical connection between teeth which already exists when all teeth are flawlessly situated in the dental arches, the ideal occlusion involves occlusal contact overbite, overjet, alignment of teeth and arrangement and relationship of teeth between the arches and connection of teeth to osseous structures.

Generally, the normal connections of the gradient of the cusps of opposing teeth to each other when in occlusion, axial location and proximal connection when the alignment of the teeth in both arches have eventuate from extension and normal growth in bond to all connected parts of the head and tissues, also the perfect anatomical connection can be achieved when the cusp-fossa connection is considered whenever the teeth are brought into contact.

Definition of malocclusion: imperfect positioning of the teeth when the jaws are closed or the misalignment of teeth and jaw or more simply is a bad bite.

Basically, three types of malocclusion are existed which caused by combination of list below:
1. Underbite
2. Overbite
3. Crowding

1: the most commonly seen as an underbite the lower teeth are forward of the upper teeth
2: the most commonly seen as an overbite the upper teeth are too far ahead of the lower teeth
3: the lower and upper teeth usually seen in the proper back and front position also may have other problems such as misalignment, crowding

The poor alignment of the teeth or genetic factors combined with poor oral habits but essentially malocclusion is passed down through families as a result malocclusion is most often hereditary, obviously malocclusion can occur at any time of life adult can get malocclusion but most often it is occurring in children. Generally, our skull bones are always growing whole the human body lives such as mandible and maxilla jaw, eyes and nose sockets, obviously the all part of the skull head continuously growing and replaced as they grow.

B: Describe the stages in the formation of an ideal occlusion
Consider tooth eruption, bone growth, and external factors such as diet and habits.

Generally, an ideal occlusion doesn’t exist in human begins indeed and is dependent to many factors and clear history, a flawless growth, the history without disease, incident which could have changed growth patterns.
The achievement of normal ideal occlusion is affiliate to multiple factors which is begin in utero and any violate growth of them will cause failure of the development of formation an ideal occlusion.
Ideal occlusion presupposes and requires:

1. A flawless and certain anatomical and geometrical connection of the skull, mandible and maxilla.
2. The normal anatomical structure such as muscular, bone, teeth tissue and an ideal development between them.
3. A certain and perfect anatomical and geometrical connection of dental units.
4. An interconnected and coordinated between the buccolingual and mesiodistal dimensions with an ideal development of coronal contour together.

The Other factors for achieving normal occlusion such as:

1. The route of each tooth before teeth eruption which follows through the bone
2. Relationship, size and positioning of the alveolar processes which name is dental arches
3. The powers(forces) which lead the route of the tooth following the eruption
4. The connections and position of the teeth within the dental arches
5. The powers(forces) which start to activate an operation when the tooth contacts it’s opposing teeth in the opposing arch