Skeletal Age-related Changes of Midpalatal Suture Densities in Skeletal Maxillary Constriction Patients: CBCT Study

Abstract

Aim:To determine if density measurements of the midpalatal suture and cervical vertebral maturation index (CVMI) are related, and to investigate if CVMI could help in predicting of the developmental status of the midpalatal suture. Materials and methods:Cone-beam computed tomography (CBCT) images of 95 skeletal maxillary constriction patients (aged 8 to 18 years) were examined. The maturational stages of the cervical vertebrae were visually defined, and midpalatal suture density in the anterior region, the middle region, and the posterior region were measured. One-way ANOVA and Fisher's least significant difference (LSD) post-hoc test were used for statistical assessment.Results: Significant differences were found in MPDS: in anterior region between (c1,c2,c3,c4) and (c5,c6) stages, in middle region between (c1,c2,c3) and (c5,c6) stages, and in posterior region between (c1,c2,c3) and (c4,c5,c6) stages. Conclusion:Midpalatal suture densities in all regions increase with skeletal maturation advancement.The significant increase after puberty may have the key role in decreasing the skeletal effects of RME after that age. Clinical significances:It is important to assess the midpalatal suture density to choose between rapid maxillary expansion (RME) and surgically assisted rapid maxillary expansion (SARME). This study revealed a significant increase in the midpalatal suture density after puberty. Thus, it may better to perform RME before puberty.

Prediction of Midpalatal Suture Maturation Stage Based on Transfer Learning and Enhanced Vision Transformer

“…In the two formulas, LN represents Layer Norm, xi' is the result of multi-head attention, and xi represents the output of the Transformer Block each time. In this study, we take xi 0 as the first token of the sequence output of the Transformer Encoder, and xi 0 passes through LN to obtain input F of the classifier, as shown in equation (10), and the classifier is the MLP head in the network.…”

“…It is generally believed that patients before the peak of adolescent development can be treated by traditional rapid maxillary expansion RME [7][8][9], because the MPS has not yet calcified and closed. However, after the peak of adolescent development, the MPS is fused and calcified [10], and the resistance of maxillary expansion also increases thereafter. If the conventional RME is still used for maxillary expansion, it will not only greatly increase the difficulty of maxillary expansion, but also be prone to adverse effects such as tooth inclination, gum atrophy, and tooth root absorption.…”

MARPE- A Literature Review on various designs for Clinical Orthodontics

“…18 Also as MPDS increases with skeletal maturity, the skeletal effects of RME might decrese. 19 Pattern of suture opening: In MARPE the suture disarticulation is seen to be relatively parallel and the suture opening angle (SOA) was very close to 0° (0.57°) even though suture interdigitation becomes more complex after the adolescent stage of development 20 it is because of the rotation of zygomaticomaxillary complex of the midface in the axial plane with its fulcrum near the TMJ. 21…”

Intraperitoneal injection of PDTC on the NF-kB signaling pathway and osteogenesis indexes of young adult rats with anterior palatal suture expansion model

“…Rel/NF-kB protein in the cytoplasm to form a trimer, so that NF-kB remains in the cytoplasm in an inactive state. The IkB family acts as an inhibitor of intracellular NF-kB [18], and its family members include IkBa, IkBp, IkBy, IkBs, IkB-R, Bcl-3, P100, and P105, of which IkBa and IkBβ dominate. The main functions of IkB protein are: prevent NF-kB from transferring into the nucleus; prevent NF-kB from specifically binding to DNA [19]; Gradually dissociate the NF-KB DNA complex.…”