![]() If there are two teeth with brackets and one in the middle of them without a bracket or the baby tooth fell out Dr. L uses this to help make room.Ĭlosed Coil Spring (CCS): Metal spring that is closed to help maintain space between two teeth. A tooth that is coming in might not have enough room to come through so Dr. Open Coil Spring (OCS): Metal spring that is open and put in tightly between two brackets to help open up space between two teeth. Power Thread: Either clear or grey thin elastic thread that is weaved under the wire around the brackets to help close space. Wires: Arch wire that goes through the brace slot to help the teeth move. Koby Tie: A metal hook that is added to a bracket that does not have its own hook so that elastics can be placed. These are used to move your teeth into their proper places. Because the uprighted first molars are generally stable, correction of the overbite in deep bite cases achieves long-term stability as well.Īn exception to the practice of distal tipping of the mandibular first molar is made when an open bite patient is treated.Elastics: Small special “rubber bands” that placed over the hooks or Koby ties. 3, 4 When the mandibular first molars are uprighted, the second premolars are extruded, and this also promotes leveling of the mandibular arch. Today, this uprighting of the mandibular first molar represents an important factor for success in achieving long-term stability in the treatment of deep bite malocclusions, as confirmed by two studies. This distal crown tip angulation helped level the mandibular arch without tipping back the second molar. When I first entered private practice, I routinely angulated the mandibular first molars by –6 degrees (ie, a tipback end) as prescribed by Dr Tweed. If there is significant reverse curvature to the mandibular occlusal plane, then the bracket heights are adjusted in both the maxillary and the mandibular arches.įig 7-17 Bracket angulations (degrees), mandibular incisors and canines. The amount of curve of Spee in the mandibular arch can be used to determine if any change in bracket height is necessary. This height modification for treatment of open bite is not always applied to the mandibular teeth because only the maxillary anterior teeth usually require extrusion. The bracket height for posterior teeth, which are in occlusion, is decreased by 0.5 mm ( Figs 7-10 and 7-11). The wires on your braces help to move your teeth, and the rubber bands help to fix the alignment (say: uh-LYNE-munt), which is. Most kids just need regular braces with wires and rubber bands doing their jobs to keep pressure on the teeth. ![]() ![]() In patients with open bite, the bracket height for the maxillary anterior teeth, which are out of occlusion, is increased by 0.5 mm ( Fig 7-9). Braces straighten teeth by putting steady pressure on them and by staying in place for a set amount of time. To offset this difference, the bracket is placed 0.5 mm lower on the second premolar.īracket placement for treatment of open bites In general, the cusp tip of the first premolar is larger than that of the second premolar. To avoid this mistake, the incisor bracket first should be placed in the center of the clinical crown and then measured and moved to the specified height. One of the most common mistakes made when brackets are placed on the mandibular incisors is to place the brackets too far incisally. ![]() Fig 7-8 Bracket placement for canine rise.
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