Zygomatic mini-implant for Class II correction in growing patients

El-Dawlatly, Mostafa M.; Abouelezz, Amr M.; El-Sharaby, Fouad A.; Mostafa, Yehya A.

doi:10.1007/s00056-014-0214-z

Cited by 19 publications

(14 citation statements)

References 22 publications

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“…Thus, nine studies were included in the qualitative and quantitative synthesis. [9][10][11][28][29][30][31][32][33] Two studies reported palatal placement of TSAD using two appliances, 9,33 and seven studies assessed the effects of using buccally placed TSADs 10,11,28-32 ; five studies placed TSADS in the infrazygomatic process 11,[28][29][30][31] and two in the inter-radicular spaces. 10,32 One of these two studies was an RCT comparing two designs of miniscrew placement.…”

Section: Study Selection and Characteristics Of Included Studiesmentioning

confidence: 99%

Distalization of maxillary molars using temporary skeletal anchorage devices: A systematic review and meta‐analysis

Bayome

Park

Bay

et al. 2021

Orthod Craniofacial Res

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Distalization of maxillary dentition is an efficient option, especially for patients seeking non-extraction treatment modalities. 1 Nevertheless, the fundamental quandary is finding the appropriate anchorage that will not produce unwanted side effects. Extraoral anchorage and non-compliance intraoral appliances such as the pendulum and distal jet have been used for maxillary molar distalization. 2,3 However, they often yield undesirable tooth movement such as distal tipping and extrusion of molars and protrusion of incisors due to loss of anchorage. 4,5

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Section: Study Selection and Characteristics Of Included Studiesmentioning

confidence: 99%

Distalization of maxillary molars using temporary skeletal anchorage devices: A systematic review and meta‐analysis

Bayome

Park

Bay

et al. 2021

Orthod Craniofacial Res

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“…This result shows the main role of the pulling forces in the screw stability under dynamic cycles, which condition was not observed after static loads of 2 N for 5 weeks. Different works have simulated the same conditions of the static loads applied by opened springs between two temporary screws in laboratory and in vivo in animals and humans [26,[38][39][40]. The same absence of statistical significance (p = 0.3139) of the static load influence on stability was disclosed in [38,40].…”

Section: Discussionmentioning

confidence: 94%

“…The mechanics can be supported by different devices, from elastomers linked to temporary screws, through headgear appliances when greater forces are needed [21,26,27]. We selected stainless steel springs only to minimize the force loss commonly observed during polymers degradation.…”

Section: Discussionmentioning

confidence: 99%

Primary Stability of Temporary Screws after Dentary and Orthopedic Forces under Static and Dynamic Load Cycles

Fernandes

Barbosa

Ferreira

et al. 2017

Metals

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Abstract:The objective was to analyze the influence of dentary and orthopedic forces under static and dynamic loads in temporary screw stability. Self-drilling titanium (Ti6Al4V) screws (6 × 1.5 mm) were inserted and removed from pig ribs. Screws were loaded by static loads of 2 N and 5 N for 5 weeks. Dynamic force was applied during 56,000 cycles for simulations of a patient's opening-closing mouth movements. Dynamic applied loads ranged from 2 to 5 N and from 5 to 7 N under a frequency of 1 Hz.Torque peak values at placement and removal were measured before and after static and dynamic cycles. Similarities in torque peaks (p = 0.3139) were identified at placement (12.54 Ncm) and removal (11.2 Ncm) of screws after a static load of 2 N. Statistical comparisons showed significant stability loss after dynamic cycles under loads of 2 N (64.82% at p = 0.0005) and 5 N (64.63% at p = 0.0026). Limited stability loss occurred in temporary screws submitted to 2 N static forces (p = 0.3139). The detrimental effects of dynamic cycles in temporary screws stability was attested after the simulation of dentary and skeletal forces, being intermittent forces more relevant in the loss of mechanical stability.

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“…In the present study the force had more intrusion and less distal component than the other studies. El Dawlatly et al [21] showed distalization by 2.92±0.69 mm with 1.2º tipping.…”

Section: Discussionmentioning

confidence: 96%

“…In contrary, Zervas et al [24] showed extrusion of upper first molar by 1.14 mm and Almeida-Pedrin et al [25] showed extrusion by 0.69 mm after treatment with headgear with bite plane. El Dawlatly et al [21] showed extrusion by 1.57 mm.…”

Section: Discussionmentioning

confidence: 96%

Infra-Zygomatic Mini Screws Compared to High Pull Headgear for Distalization And Intrusion of Maxillary Molars in Growing Patients with Class II Malocclusion: A Randomized Clinical Trial

Afify

Dakroury

Elkordy

et al. 2021

EJDENT

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Objective: The aim of the present randomized clinical study was to evaluate the distalization and intrusion effect of an Infra-zygomatic mini-screws supported appliance and compare it with high pull headgear appliance in treatment of growing patients with class II malocclusion. Methodology: 22 growing boys aged between (10 to 12 years) with class II div 1 malocclusion randomly divided to 2 equal groups. The first group treated with high pull headgear with acrylic splint and the second one treated with an Infra-zygomatic mini-screws supported appliance. The treatment duration was 8 months for both groups. Lateral cephalometric radiographs were taken before and after the treatment for each patient to be analyzed. Results: The maxillary first molar distalization was 2.58±2.31 mm in head gear group and 1.53±2.83 mm in mini-screws group. There was no significant maxillary first molar intrusion in both groups. There were no significant differences between the two groups. Conclusions: the mini-screws supported appliance can be used as the fixed replacement of the removable high pull headgear appliance with no need for patient cooperation.

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Zygomatic mini-implant for Class II correction in growing patients

Abstract: Use of this technique allowed Class II correction with concomitant reduction in the visible gingiva in the treated subjects without the adverse effects experienced with other appliances.

Cited by 19 publications

References 22 publications

Distalization of maxillary molars using temporary skeletal anchorage devices: A systematic review and meta‐analysis

Distalization of maxillary molars using temporary skeletal anchorage devices: A systematic review and meta‐analysis

Primary Stability of Temporary Screws after Dentary and Orthopedic Forces under Static and Dynamic Load Cycles

Infra-Zygomatic Mini Screws Compared to High Pull Headgear for Distalization And Intrusion of Maxillary Molars in Growing Patients with Class II Malocclusion: A Randomized Clinical Trial

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