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Ortho7

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robbypowell's version from 2016-12-08 14:11

Incisor alignment (or limited adjunctive ortho treatment)

Question Answer
T/F: Limited or adjunctive procedures are limited in scope and do not address a patients malocclusion in a comprehensive mannerTrue
T/F: A patient being offered limited ortho treatment does not need a complete orthodontic evaluation and have orthognathic surgery presented to themFalse (extreme example, but "A patient must be informed of all of his/her treatment options")
Length of treatment-adjunctive or limited orthodontic treatment should be limited to that which can be accomplished in _____ to _____ months and less than ____ mm of movement6-12 months; <3 mm of movement (12 month is approaching comprehensive case)
Sequencing: is it best to do implants and indirect restorations before or after orthodontic tooth movementAfter (as a general rule) (should be noted that we learned elsewhere, i think advance prosth and esthetics, that there ARE situations in which it could be desirable to do restorations before initiation of ortho tx; but know that the GENERAL RULE is that it's best to do implants and indirect restorations after movement, but that there are some, at this point undisclosed, exceptions)
With every action or force there is an equal reaction the opposite direction... this is Newton's ____ LawNewton's 3rd Law
How is anchorage typically established in limited ortho cases?by adding additional teeth to the anchor segment (sounds like banding to me) (can also be re-enforced with fixed intra-oral appliance or teeth from opposing arch)
In limited or comprehensive ortho therapy, problems most often result from inadequate ... what?Anchorage
Teeth with reduced periodontal attachment and bone support must be moved with _______ (heavy/light) forcesLIGHT (that are adjusted to the amount of periodontal attachment loss)
T/F: A tooth with periodontal attachment loss has a greater moment than a normal toothTrue (tipping around fulcrum... fulcrum is lower)
T/F: A tooth with periodontal attachment loss has less moment than a normal toothFalse (greater moment) (center of rotation is positioned more apically, so the lever arm is longer and the same amount of force will induce greater rotation and exert itself on remaining bone and PDL in higher concentrations)
T/F: Lighter forces must be used in periodontally compromised teeth to prevent damage to an already compromised attachment.True
Bonding for ___________ is often used in molar up righting and forced eruption treatments where the goal is to move only one tooth. Rather than placing the brackets along the crown long axis and at a predetermined distance from the incisal edge, the brackets are positioned such that a wire can be placed passively in the bracket slots.Bonding for CONVENIENCE
Bonding for convenience is most often used in what two types of treatment?Molar up-righting & Forced Eruption
Rather than placing the brackets along the crown long axis and at a predetermined distance from the incisal edge, the brackets are positioned such that a wire can be placed passively in the bracket slots ... this is referred to as _____ _____ ______Bonding for Convenience
T/F: When brackets are bonded for convenience, it is often necessary to place compensating bends in the arch wire so that the wire will be truly passiveTrue
T/F: When brackets are bonded for convenience, it is unnecessary to place compensating bends in the arch wire because they already passively fit into the bracket slotFalse (bond for convenience is because tooth is in more extreme and unusual position like in Molar up-righting and Forced Eruption, so these teeth would not passively fit into bracket slots)
Crowding of ____mm or less-considered mild crowding3mm or less
Mal-alignment of incisor are appropriate for limited ortho treatment when the primary tooth movement involved is ... what movement?TIPPING
Limited treatment of incisor alignment is appropriate when ____ and ____ will be improved or maintained by the treatmentOverbite & Overjet
areas of incisor overlap are predisposed to the development of what esthetic concern following treatment?dark triangles (or interproximal tissue deficiencies) (basically... there has been crowding and less gingiva in the area for some time... moving the teeth will not cause gingiva to fill out embrasures... and this will lead to black triangles)
What does SOOF stand for?space, overjet, overbite, function
The key treatment-planning considerations in the alignment of crowded anterior teeth are space acquisition and the effect this would have on ______, _________ & _______Overjet, Overbite & Function
The correction of maxillary crowding through proclination will usually lead to an increase in the over-____ relationship and decrease in the over-____Overjet; Overbite
When incisors (mandibular) are tipped the incisal edge becomes slightly lower, this means as you _______ teeth you also reduce the over-____Procline; Overbite
Appliance design most often used for limited treatment of incisor irregularities is commonly referred to as a __x__ or __x___ appliance2 x 4; 2 x 6
What type of wire is not appropriate for limited treatment?rectangular wire (bucco-lingual movement; 3rd order movement; torquing movements)
______ order movements are beyond the scope of limited ortho treatment3rd order (aka bucco-lingual torquing)(w/ rectangular wire)
T/F: The stabilization period or retention period and methods used for limited tx are no different from those used for comprehensive orthodontic therapy.True
T/F: The stabilization period or retention period and methods used for limited ortho tx are shorter and less involved than those used for comprehensive orthodontic therapy.False (no diff) (this is because cause for this has nothing to do with how much is done.. but that the body takes time to accept new positions as normal and reorganize PDL, collagenous and supracrestal fibers)
When removable retainers are used... a commonly recommended retention schedule is full time wear for how long? and then nighttime wear for how long? (in non-growth patient)6 months; following 6 months
What proportion of enamel width can be removed for inter proximal reduction?1/2 (0.2 mm per proximal surface in the mandibular incisor region and to 0.3 mm per proximal surface in the maxillary anterior region is a conservative limit to the amount of inter proximal reduction)
____ mm per proximal surface in the mandibular incisor region and by ____ mm per proximal surface in the maxillary anterior region is a conservative limit to the amount of inter proximal reduction0.2mm (per man inter proximal surface); 0.3 mm (per max inter proximal surface)
T/F: Triangular shaped teeth are more appropriate for inter proximal reduction than square or barrel shaped teeth.True
T/F: Square shaped teeth are more appropriate for reduction than Triangular shaped teeth.False (vice-versa)
Space gain in the anterior region from inter proximal reduction should be limited to _________ to _________ mm.1-3 mm
The leaves of a leaf gauge are ___ mm, this can be used to determine the amount of tooth structure removed accomplished with inter proximal reduction0.1 mm
List 5 possible complications (or undesirable outcomes) from inter proximal reductionunesthetic proximal contours, open contacts, enamel ledging, tooth sensitivity and soft tissue injury
memorize

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