(n.) Apparatus above ground at the mouth of a mine or deep well.
Example Sentences:
(1) Asymmetries occur less often whilst using the low-cervical-pull according to Sander, due to the reduced friction between the two plastic parts of this headgear system.
(2) Eight macerated human child skulls with a dental age of approximately 9.5 years (mixed dentition) were consecutively subjected to an experimental standardized high-pull headgear traction system attached to the maxilla at the first permanent molar area via an immovable acrylic resin splint covering all teeth.
(3) Questionnaires designed to assess attitudes and use of headgear were completed by 537 Division I collegiate wrestlers.
(4) This is brought about by the corresponding mechanics of the activator-headgear combination.
(5) These results demonstrated that open bite complicated by a Class II vertical growth pattern can be treated during the mixed dentition with favorable results by a combination of a removable functional appliance and high-pull headgear.
(6) While no change in SNA occurred with Andresen therapy, Begg and headgear therapies produced a permanent reduction in the variable.
(7) The bite-jumping-appliance BJA is a special functional appliance which affects the upper jaw comparably to activator headgear combinations (SNA angle).
(8) Cervical headgear, Class II, or vertical elastics were used when indicated.
(9) All wearers of headgear and their families should be educated in the proper use of these devices and about the potential for severe facial injuries.
(10) The headgear force can either be distributed directly on the teeth to be moved, on hooks which are soldered on the archwire, on chin caps or mandibular troughs resp.
(11) Two types of cervical headgear were presented, the cervical traction with caudal tip and with cranial tip of the long outer bow.
(12) The pterygoid plates of the sphenoid bone, the zygomatic arches, the junction of the maxilla with the lacrimal bone and the ethmoid, and the maxillary teeth were affected by both types of headgear.
(13) The bilateral ear protection device, referred to as "headgear", is fitted to all patients in the burn center who require intubation for an inhalation injury; it is worn continuously until extubation.
(14) The facebow, which is of necessity removable, can be displaced from its intra-oral attachments (whilst still connected to the headgear by the elastics) and may result in personal injury.
(15) Girls were more cooperative in wearing headgear, which was related to their more general attitude of cooperation.
(16) A small reduction was also produced in SNB by Begg and headgear therapies.
(17) The effect of lever arms in the headgear assembly on the load delivered to the teeth warrants further study.
(18) Six subjects would rotate their heads laterally (from side-to-side) for 30 min with each of the headgear loading combinations.
(19) The study comprises an analysis of the effect of treatment with a modified activator combined with a high-pull headgear during a standardized observation period of the initial 6 months of treatment.
(20) Four subjects were monitored in the sleep lab with both our headgear and standard polysomnography.