Zygomaticomaxillary suture maturation: Part II—The influence of sutural maturation on the response to maxillary protraction

Abstract

Structured Abstract Objective To evaluate the influence of the maturational stages of zygomaticomaxillary sutures (ZMS) on the response to maxillary protraction. Subjects and Methods A total of 40 Class III patients were treated retrospectively with either a combination of rapid maxillary expansion and facial mask (RME/FM) or bone-anchored maxillary protraction (BAMP). The RME/FM group consisted of 18 patients (mean age 8.3 years), while the BAMP group was comprised of 22 patients (mean age 11.8 years). The initial CBCT images (T1) of the ZMSs were classified blindly. 3D models from CBCT images at the start and at the end of orthopaedic treatment were registered on the anterior cranial base, and corresponding structures were measured on colour-coded maps and semitransparent overlays. The amounts of protraction of the maxilla, zygoma, orbitale and maxillary first molars for both groups were analysed with two-way ANOVA with Holm-Sidak post hoc test for multiple comparisons. Results A significant association was found between the early maturation stages of the ZMSs and the amount of maxillary protraction, regardless of the protraction method used. Class III patients with ZMS stages A and B showed greater maxillary protraction than patients at stage C. Conclusion The maturational stages of ZMS are associated with the response maxillary protraction.

Skeletal Changes in Growing Cleft Patients with Class III Malocclusion Treated with Bone Anchored Maxillary Protraction—A 3.5-Year Follow-Up

“…For example, in the BAMP group, a displacement of A-point has been observed with a maximum of 6.5 mm and a minimum of −0.8 mm. Such a large individual variation could be caused by zygomatic suture maturation, with more favorable results reported for patients at an early stage of maturation [ 25 ]. According to Angelierri et al, the zygomaticomaxillary sutures show a high level of fusion at the chronological age of 15-years and older.…”

Transverse maxillary deficiency: treatment alternatives in face of early skeletal maturation

“…Most of the resistance to midpalatal suture opening seems to be explained by the fusion of circummaxillary sutures 13,25 . In a recent study, Angelieri et al 26 found an association of the maturation stages of the zygomaticomaxillary suture and the response to RME followed by protraction.…”

Unanticipated Fractures of the Zygomatic-Maxillary Suture in LeFort III Internal Distraction: Salvage of Midfacial Advancement via Rigid External Distraction of an Orphaned LeFort II Segment

“…CT evaluation of suture maturity has demonstrated efficacy in predicting degree of maxillary expansion with a face mask system. 10,17 This system could potentially be modified to better quantify fracture risk and guide preoperative device selection as well.…”