For which of the following malocclusion is serial extraction most appropriate?

Serial extraction should be limited essentially to class 1 malocclusion with an initial normal sagittal jaw relationship and normal neuromuscular balance. It is the objective of this treatment to maintain the neuromuscular balance.

When do you use serial extractions?

Based on the typical eruption pattern of the teeth, the treatment plan should involve extracting the deciduous canines around 8 to 9 years-old in order to create space for the proper alignment of incisors. This should be followed by the extraction of deciduous first molars a year later.

What is the order of serial extraction?

Serial extraction is a sequential plan of premature removal of one or more deciduous teeth in order to improve the alignment of permanent teeth and then removal of permanent teeth to maintain the proper ratio between tooth size and arch size.

What is a Class 11 malocclusion?

Class II. A Class II malocclusion is one whereby the upper front teeth are protruding over the lower teeth. In other words we observe an excessive horizontal (overjet) discrepancy.

What is skeletal Class 1 malocclusion?

Class I malocclusion. Class I malocclusion is defined as that malocclusion in which the lower incisors occlude on or directly beneath the cingulum plateau of the upper incisors (Figure 2.1). The upper incisor inclination is average and the overjet is 2–3 mm.

Serial Extractions- An Interceptive Treatment Approach -Orthodontics

What is a Class III malocclusion?

Class III malocclusion represents a growth-related dentofacial deformity with mandibular prognathism in relation to the maxilla and/or cranial base. Its prevalence varies greatly among and within different races, ethnic groups, and geographic regions studied.

What is skeletal Class 2 malocclusion?

Class II is where the lower first molar is posterior (or more towards the back of the mouth) than the upper first molar. In this abnormal relationship, the upper front teeth and jaw project further forward than the lower teeth and jaw. There is a convex appearance in profile with a receding chin and lower lip.

What is class4 malocclusion?

A true class IV malocclusion occurs when one mandible is longer than the maxilla and the other is shorter than the maxilla. The remainder of wry bites are subsets of class II or III. Class IV malocclusions are jaw length discrepancies and therefore should be considered a primarily genetic condition.

What causes Class 2 malocclusion?

Class 2 (or class II) malocclusions are characterized by upper molars that are too far forward compared to the lower molars. This overbite can be caused by an overly prominent upper jaw or an underdeveloped lower jaw.

What is a Class 3 underbite?

Class III bites are often referred to as an underbite. This occurs when the lower molars are positioned more towards the front of your mouth than the upper molars. As a result, your lower teeth and jaw project out beyond the upper teeth and jaw.

Which teeth are extracted in serial extraction?

Treatment stages in serial extraction

The primary first molars are removed to allow the eruption of the first premolars. Once the first premolars are erupted, they are removed and a space maintainer is issued to allow the permanent canines to erupt.

Who introduced serial extraction?

Robert Bunon (1743) was the one to primarily explain serial extraction. Kjellgren (1929) coined the term “serial extraction”. Nance (1940) is known as the “Father of serial extraction”. The other pioneers who advocated this procedure were Hotz, Tweed, Dewel and Jack Dale.

Why posterior teeth are extracted first?

Why are Maxillary Teeth Extracted before Mandibular teeth? It prevents any fall of enamel or restorative debris from falling into the extraction sockets of the lower arch.

Which parameter is a contraindication for serial extraction?

Contraindications. Serial extraction should not be performed in the following circumstances: Class I malocclusions where the lack of space is slight and the teeth show only mild crowding. Where there is a skeletal discrepancy in the dental arches.

What is anterior Crossbite?

Anterior crossbite is defined as a malocclusion resulting from the lingual positioning of the maxillary anterior teeth in relationship to the mandibular anterior teeth. ¹. Dental crossbite involves localized tipping of a tooth or teeth and does not involve basal bone.

What is Multiple Extraction?

In a multiple extraction procedure, a quantity of solvent is used to extract one layer (often the aqueous layer) multiple times in succession. The extraction is repeated two to three times, or perhaps more times if the compound has a low partition coefficient in the organic solvent.

What causes class 3 malocclusion?

The most common cause of Class III malocclusions is excessive growth of the mandible. The molar position of these patients is referred to as mesio-occlusion, whereas the anterior relationship shows a negative overjet.

How do you correct a Class 2 malocclusion?

In adults, moderate Class II malocclusion can be corrected with fixed appliances in combination with intermaxillary elastics and/or teeth extractions, and severe malocclusion with fixed appliances and orthognathic surgery.

What are the 3 types of malocclusion?

What is dog malocclusion?

A skeletal malocclusion results when an abnormal jaw length creates a malalignment of the teeth. A dental malocclusion, or malposition, occurs when the upper and lower jaw lengths are considered normal but there may be one or more teeth that are out of normal alignment (malpositioned tooth/teeth).

What is an overjet vs overbite?

An overbite is a vertical misalignment, while an overjet is a horizontal misalignment. With an overbite, the upper teeth point straight downwards, while they protrude diagonally against the lower teeth in an overjet. Note that it is possible to have both an overbite and an overjet at the same time.

What is normal overjet and overbite?

The normal range of overjet and overbite is considered as 2-4 mm. The English variation tends towards increased overjet and overbite, while the Iraqi variation tends towards lower values for both parameters. Significant correlation is seen between overjet and overbite at 1 per cent level in both samples.

What is a Class 3 in orthodontics?

Class III. Class III is where the lower first molar is anterior (or more towards the front of the mouth) than the upper first molar. In this abnormal relationship, the lower teeth and jaw project further forward than the upper teeth and jaws. There is a concave appearance in profile with a prominent chin.

How do you fix a Class 3 bite?

How is skeletal malocclusion treated?

Maxillary deficiency in growing patients with skeletal Class III malocclusion can be treated by either extraoral or intraoral appliances. Extraoral appliances include face mask, reverse chin cup, reverse headgear, and protraction headgear.