Many individuals undergoing orthodontic treatment encounter the issue of tooth separation. Why do some patients require tooth separation procedures while others do not? The primary goal of tooth separation is to create a small gap—approximately 0.3mm—between the base tooth and its adjacent teeth, facilitating the placement of brackets. So, is tooth separation absolutely necessary for orthodontic treatment?This article explains!
Orthodontic Treatment
1. Is tooth separation always necessary for orthodontics?
No, tooth separation isn't mandatory. Non-separating orthodontic treatments now account for a growing proportion of cases, and we can safely say they dominate the field.Situations requiring tooth separation have become relatively less common!
2. What is the purpose and principle of tooth separation? (Why separate teeth for orthodontic treatment?)
The purpose of tooth separation is to place bands on the molars!
Tooth separation is a preparatory step before fitting full-mouth appliances. The orthodontist places elastic separation rings (or separation springs) on both sides of the patient's molars (typically the #6 teeth). After 5-7 days of separation, a small gap will appear on either side of the #6 teeth.This allows us to place a band over the 6th tooth! A buccal tube connects to the band, serving as an anchor for the archwire.Because teeth are often too tightly packed together to fit a band over a molar, we place a separator ring (or separator spring) on the front and back of tooth number 6. This loosens the contact between teeth, creating a small gap to insert the band.
Why can orthodontic treatment proceed without separating teeth? The purpose of the band is to weld the buccal tube.Previously, bonding agents lacked sufficient strength to directly attach buccal tubes to the tooth surface (risking detachment). With advancements in bonding technology, light-cured adhesives (activated by a pure blue light from a curing lamp to maximize bonding strength) now enable direct bonding of buccal tubes to the surfaces of teeth #6 and #7.
Direct bonding eliminates the need for tooth separation. However, since light-cured adhesives are significantly more expensive than traditional domestic orthodontic adhesives, using domestic adhesives for direct bonding remains feasible. This approach carries a higher risk of bracket detachment, leading some dentists to prefer the traditional method of separating teeth for band placement.
Post-tooth separation precautions:
Avoid hard foods while wearing bands. Do not bite down on the banded area, as this may cause severe pain and band detachment! Consume soft soups and thin porridge during banding. Strictly avoid fibrous foods like pork knuckles or beef, which can snag the band and cause it to fall off.