MALUCLUSÕES DA DENTIÇÃO DECÍDUA - Princípios da Ortodontia - Parte 6

Summary

In this video from the Didactic Orthodontics channel, Dr. Rafael Lins discusses the common malocclusions in the deciduous dentition, including anterior open bite, deep bite, and crossbites. He explains the importance of understanding normal dental development and the significance of early intervention in addressing these issues. The video covers key topics like Baume arch types, terminal planes, and different causes of malocclusions, such as habits or skeletal issues. Dr. Lins emphasizes the need for regular orthodontic evaluations and provides treatment options to prevent these problems from persisting into permanent dentition.

Takeaways

• 😀 The deciduous dentition consists of 20 teeth, with characteristics like deep bites, top bites, and gentle protrusions being normal.
• 😀 Gentle open bites in deciduous teeth are considered normal, though they should be monitored to avoid accentuation.
• 😀 Baume arch type 1 is characterized by generalized diastemas in the anterior region, while Baume arch type 2 shows little to no space between the teeth or slight crowding.
• 😀 The presence of diastemas doesn't guarantee the proper alignment of permanent teeth, though it can indicate better alignment potential.
• 😀 Terminal plane classification of second deciduous molars includes straight terminal planes, mesial steps, and distal steps, which influence the development of molar relationships.
• 😀 A straight terminal plane in deciduous teeth can evolve into a normal, Class 1, or Class 3 molar relationship, while mesial steps tend to lead to Class 3 molars.
• 😀 Biannual orthodontic exams are essential to monitor and evaluate molar relationships during deciduous dentition.
• 😀 Common malocclusions in deciduous dentition that need correction include anterior open bite, deep bite, posterior crossbite, and early tooth loss.
• 😀 Anterior open bite can be caused by thumb sucking or pacifier use, and may self-correct, with treatment options like palatal grids available.
• 😀 Posterior unilateral or bilateral crossbites should be corrected during deciduous dentition to prevent further issues in mixed or permanent dentition, with treatment options like quadrihelix or flat direct tracks.
• 😀 Anterior crossbites should be corrected immediately in deciduous teeth using digital springs in removable or fixed appliances to prevent further complications.
• 😀 Early tooth loss due to decay or accidents can be managed with space maintainers like the Nance lingual arch or Strap band to preserve space for permanent teeth.

Q & A

What is the total number of deciduous teeth in a child?

A child has a total of 20 deciduous teeth.

What are the normal characteristics of the deciduous dentition?

Normal characteristics include a deep bite, top bite, gentle protrusion, and sometimes a gentle open bite, which should be monitored.

What is the Baume arch classification?

The Baume arch is classified into two types: Baume arch type 1, where there are generalized diastemas in the anterior region, and Baume arch type 2, where there is no space between the teeth or slight crowding.

How does the presence of diastemas in deciduous teeth affect the alignment of permanent teeth?

The presence of diastemas in deciduous teeth may suggest good alignment for permanent teeth, but it cannot be fully confirmed as permanent teeth alignment can still vary.

What are terminal planes, and why are they important?

Terminal planes refer to the relationship between the distal surfaces of the upper and lower second deciduous molars. They help predict how the molar relationship will evolve into permanent teeth and guide orthodontic intervention if needed.

What are some common malocclusions in the deciduous dentition that should be corrected early?

Common malocclusions include anterior open bite, deep bite, posterior unilateral or bilateral crossbite, anterior crossbite, and early tooth loss.

What causes anterior open bite in children?

Anterior open bite is often caused by habits like thumb-sucking or pacifier use, and it may self-correct in some cases.

How can deep bite be corrected in children?

A deep bite can be corrected with flat direct tracks or a plate with equiplan.

What is the difference between dental, functional, and skeletal origins of posterior crossbite?

A dental origin of posterior crossbite occurs when the dental inclination is wrong, a functional origin happens due to premature contact during jaw closure, and a skeletal origin involves an improper size of the bone bases despite correct dental positioning.

How should anterior crossbites be treated in deciduous dentition?

Anterior crossbites in deciduous dentition need to be corrected immediately, and treatment options include digital springs in removable or fixed appliances.

What should be done when early loss of deciduous teeth occurs?

When there is early loss of deciduous teeth, a space maintainer like a Nance lingual arch or Strap band can be used to preserve space for permanent teeth eruption.