Orthodontic Assisting Basics Part I | Braces | Dr. Nathan

Summary

In this video, Dr. Nate provides a comprehensive introduction to orthodontic assisting, focusing on foundational knowledge crucial for assistants. Topics covered include the basics of orthodontics, such as understanding the role of an orthodontist, different types of wires and brackets, tooth numbering, and the tools used in orthodontic procedures. Dr. Nate also explains key orthodontic terms, classifications like Class I, II, and III bites, and issues like overbite, overjet, and crossbites. The video serves as an essential primer for those new to orthodontic assisting, with a focus on terminology, wire differences, and case assessments.

Takeaways

• 😀 An orthodontist is a dentist who has undergone additional training (3 years on average) to specialize in tooth movement, braces, and Invisalign.
• 😀 Orthodontic wire sizes (e.g., 16x22) refer to the thickness and strength of the wire. Larger sizes offer more strength for tooth movement.
• 😀 There are different types of braces including metal, clear, and Invisalign, with varying slot sizes (18 vs. 22), which affect how the wire fits into the bracket.
• 😀 The orthodontic tooth numbering system starts at the midline, with centrals as 1s, laterals as 2s, canines as 3s, and so on.
• 😀 Nickel-Titanium (NiTi) wires are flexible and used initially for straightening teeth, while stainless steel wires are stronger and used later to torque teeth.
• 😀 O-Rings or elastic ties help hold the wire in place within the bracket, while Power Chains are used for closing gaps in teeth by exerting continuous pressure.
• 😀 Orthodontic instruments include bracket holders, cutters, pliers, and banding tools. Specialized tools like burrs are used for cleaning and bonding.
• 😀 The classification system for bites includes Class 1 (ideal bite), Class 2 (overbite), and Class 3 (underbite), with further distinctions like overbite vs. overjet.
• 😀 A crossbite occurs when the upper teeth are inside the lower teeth, either in the front or back of the mouth. This condition can affect bite alignment.
• 😀 Treatment time is typically categorized into increments (e.g., 6-12 months, 12-18 months), helping plan the orthodontic care efficiently.

Q & A

What is the primary difference between an orthodontist and a general dentist?

An orthodontist is a dentist who has completed additional schooling (usually 3 years) to specialize in tooth movement, including treatments like braces and Invisalign. Not every dentist becomes an orthodontist.

What does it mean for an orthodontist to be board certified?

A board-certified orthodontist has passed an extra exam and presented cases to a board for evaluation. While this doesn't require more schooling, it demonstrates a commitment to higher standards.

What are the two common sizes of orthodontic brackets in North America?

The two most common sizes for orthodontic brackets in North America are 18 and 22. These refer to the size of the slot that holds the wire.

How does the numbering of teeth in orthodontics differ from general dentistry?

In orthodontics, teeth are numbered starting from the midline. The central incisors are '1', laterals are '2', canines are '3', and so on, which differs from general dentistry where the numbering starts from the back of the mouth.

What is the main difference between a NiTi (Nickel Titanium) wire and a stainless steel wire?

The primary difference is flexibility. NiTi wires are very flexible and used initially to straighten teeth, while stainless steel wires are stronger and used later to correct the position of teeth with more precision.

Why do orthodontists typically start with NiTi wires in treatment?

NiTi wires are flexible, making them ideal for the initial stages of treatment when the teeth are crooked or crowded. Their flexibility helps gradually align the teeth without too much force.

What is the purpose of a power chain in orthodontics?

A power chain is an elastic chain used to close gaps between teeth. Unlike o-rings or elastic ties, which simply hold the wire in place, power chains apply constant force to bring teeth together.

What is the difference between an overbite and an overjet?

An overbite refers to the vertical overlap of the upper teeth over the lower teeth, while an overjet refers to the horizontal distance between the upper and lower teeth, where the upper teeth stick out too far.

What does a crossbite refer to in orthodontics?

A crossbite occurs when the upper teeth are positioned inside the lower teeth, either in the front (anterior crossbite) or back (posterior crossbite). This misalignment can lead to issues with the bite and jaw.

What is TMJ, and how does it affect orthodontic treatment?

TMJ (temporomandibular joint) refers to the joint that connects the jaw to the skull. Issues like clicking, crepitus, or jaw pain can indicate TMJ disorders, which may affect how the teeth are aligned and require careful monitoring during orthodontic treatment.