Related Experiment Video
Updated: Jan 25, 2026
03:47
A Retrospective Study on Endoscopic Surgery for the Treatment of Paravertebral Abscess in Spinal Tuberculosis Patients
Published on: October 25, 2024
634
Soft-tissue changes after Class II malocclusion treatment using the Sander bite-jumping appliance: a retrospective
Michele Tepedino1, Maria V Della Noce2, Domenico Ciavarella3
1Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy - m.tepedino@hotmail.it.
Minerva Stomatologica
|April 25, 2019
Summary
The Sander bite-jumping appliance (BJA) effectively improved facial profiles in Class II malocclusion patients during puberty. This functional treatment reduced facial convexity, offering positive aesthetic outcomes.
Area of Science:
- Orthodontics
- Craniofacial development
- Dental aesthetics
Background:
- Functional treatment of Class II malocclusion impacts patient aesthetics and psychosocial well-being.
- The Sander bite-jumping appliance (BJA) is known for significant mandibular advancement.
- Previous research has not evaluated the soft tissue effects of the Sander BJA.
Purpose of the Study:
- To assess the soft tissue profile changes resulting from Sander BJA treatment.
- To compare these changes against a control group of untreated individuals.
Main Methods:
- Retrospective analysis of 19 patients treated with BJA during puberty.
- Comparison with 15 matched untreated controls.
- Evaluation of lateral cephalograms for skeletal and soft tissue parameters (ANB, incisor inclination, facial convexity, nasolabial angle).
Main Results:
- Statistically significant improvements observed in the ANB angle.
- Significant reduction in facial convexity.
- Significant changes in upper incisor inclination noted.
Conclusions:
- The Sander BJA is effective for functional Class II malocclusion treatment during puberty.
- Treatment leads to short-term improvements in facial profile and reduced convexity.
- Further research may explore long-term effects and patient-reported outcomes.
Related Concept Videos
01:16Hydraulic Jump: Problem Solving
531
To analyze a hydraulic jump in a rectangular channel with a flow speed of 6 meters per second, follow these steps:Calculate Effective Upstream Velocity:When the downstream gate closes, a hydraulic jump forms, traveling upstream at 2 meters per second. This wave speed combines with the initial channel flow velocity, creating an effective upstream velocity.Identify Flow Velocities Before and After the Hydraulic Jump:Upstream of the hydraulic jump, the effective flow velocity includes both the...
531
01:29Hydraulic Jump
662
A hydraulic jump is a sudden rise in fluid depth in open channels, occurring when high-velocity (supercritical) flow transitions to low-velocity (subcritical) flow. This phenomenon requires an upstream Froude number greater than 1, as flows with Fr1<1 remain subcritical, making a hydraulic jump impossible due to the need for negative head loss, which violates thermodynamic principles.The characteristics of a hydraulic jump depend on the upstream Froude number and are classified as...
662
01:25Drug Classes and Categories
3.1K
Drugs can be classified according to their chemical composition or their intended therapeutic application. For instance, anti-infective agents that possess the ability to eliminate pathogens or suppress their growth and reproduction can be grouped based on the organisms they target or their chemical structure. Furthermore, drugs can be divided into prescription, nonprescription, or controlled substances. Prescription medications, such as antibiotics, require oversight from a licensed healthcare...
3.1K
01:25Antibody Structure and Classes
8.4K
Antibodies, also known as immunoglobulins, are produced by B cells in response to foreign substances, such as bacteria and viruses. These proteins are critical for recognizing and neutralizing these substances, protecting the body from potential harm.
The basic structure of an antibody consists of four protein chains: two identical heavy chains and two identical light chains. These chains are held together by disulfide bonds and other non-covalent interactions, forming a Y-shaped structure.
The basic structure of an antibody consists of four protein chains: two identical heavy chains and two identical light chains. These chains are held together by disulfide bonds and other non-covalent interactions, forming a Y-shaped structure.
8.4K
01:15Antihypertensive Drugs: Thiazide-Class Diuretics
1.7K
Thiazide diuretics are sulfonamide derivatives featuring a benzothiadiazine ring system in their molecular structure. Based on this structure, thiazide diuretics can be categorized into two groups: thiazide-type and thiazide-like diuretics. Thiazide-type diuretics, including hydrochlorothiazide and chlorothiazide, consist of a benzothiadiazine backbone with an attached sulfonamide group. Thiazide-like diuretics, such as chlorthalidone and indapamide, lack the thiazide ring but demonstrate...
1.7K
01:22Antiarrhythmic Drugs: Class I Agents as Sodium Channel Blockers
2.9K
Class I antiarrhythmic drugs are used to treat various types of arrhythmias or irregular heart rhythms. These drugs block the sodium (Na+) channels in the cardiac cells, thereby affecting the movement of electrical impulses across the heart. Class I antiarrhythmic drugs are divided into three subgroups: Class IA, Class IB, and Class IC, each with distinct mechanisms of action and effects on the heart.
Class 1A Antiarrhythmic Drugs: These drugs work by moderately blocking sodium channels,...
Class 1A Antiarrhythmic Drugs: These drugs work by moderately blocking sodium channels,...
2.9K