Maino, Bednar, Pagin, and Mura
between the upper left first and second premo- lars, and the other distal to the upper left second molar. Brackets were bonded to the extruded molars, and an .016" .022" sectional archwire was used to consolidate the teeth. Two Sental- loy** coil springs exerting 100g each of intru- sive force were attached between the Spider Screws and the brackets.
Fig. 9 Case 1. Intrusion of left second premolar and first and second molars using coils springs and elastic to Spider Screws.
Professional scaling and gentle root planing were performed periodically to supplement the patient’s oral hygiene.10 After eight months of treatment, a bracket was bonded to the upper left second premolar, and an elastic was attached from the mesial Spider Screw (Fig. 9). The max- illary curve of Spee was leveled in another two months (Fig. 10).
A 50-year-old female presented with over- eruption of the upper left second premolar and first and second molars due to missing antago- nists in the lower left quadrant (Fig. 8). The extruded teeth made the patient’s smile unesthet- ic and precluded the restoration of the lower left edentulous area with osseointegrated implants.
A 58-year-old female presented with a Class II malocclusion; the upper right second premolar and first molar were missing, and there was a temporary bridge from the right first pre- molar to the second molar (Fig. 11). The upper
Anchorage for orthodontic intrusion of the upper left posterior teeth was provided by two Spider Screws: one in the interradicular septum
**Trademark of GAC International, Inc., 185 Oval Drive, Islandia, NY 11749.
Fig. 10 Case 1. Patient after 10 months of treatment.
VOLUME XXXVII NUMBER 2