TADs
The site with more cases of contact with the roots was?
Between the first and second incisors/ canine and the first premolar/ second premolar and the first molar/ no difference between the sites.
Between the canine and the first premolar!
The authors showed that the panoramic radiograph is not an accurate tool to assess implant placement.
A possible side effect of Piezocorticision:
All are possible. Piezocorticision Shortens both preliminary bracket alignment and treatment time
The materials used for attachments may pose a health hazard due to the release of:
Bisphenol A
Herbst and Airway: which part of the upper airway showed a statistically significant increase:
Nasal cavity/ Nasopharynx/ Oropharynx/All
Oropharynx
The effects of fixed orthodontic retainers on periodontal health:
The fixed retainer can cause severe periodontal damage/ Bonded fixed retainers are compatible with periodontal health/There is a lack of high-quality data
Fixed retainers are compatible with periodontal health and there is lack of data
Which insertion angle provides better stability?
90 degrees / 70 degrees / All the same
70 degrees. most important: Diameter and insertion angle of mini-implant
Is there a gender risk regarding root resorption in maxillary central incisors in treating impacted canines?
Men are at greater risk to root resorption than women.
Outcome assessment of orthodontic clear aligners vs fixed appliance: which criteria showed better results?
Duration of Tx/ Emergency visits/ Posttreatment outcomes/ ABO index
For mild malocclusions, treated in teenagers All showed better results
Effects of rapid maxillary expansion on temporomandibular joints. What is the effect on disc? condyle? fossa?
RME in growing patients is able, in the short term, to modify the condyle-fossa relationship, not modifying the position or shape of the articular disc, but able to maintain or improve the intercondylar symmetry relationship
If there is a threshold of developing dehiscence, then a threshold for L1-NB advancement would be limited to?
2mm
Significant Risk factors regarding miniscrew failure:
No significant factors /Miniscrew’s design /Age / Smoking and type of gingiva
Smoking and the type of gingiva!
Overall failure was low
Hemifacial microsomia treated with a hybrid technique combining distraction osteogenesis and a mandible-guided functional appliance. what are the unexpected movements that occur?
Anterior movement of the mandible/ Decanting of occlusal plane/ Shifting and axial deviation/ No unexpected movements
C. Shifting and axial deviation
What is the expected movement after distraction osteogenesis in hemifacial microsomia? Mandibular decanting
3. What does the Mandibular Guided functional appliance do? Creates an ideal pattern of guidance for mandibular movements + Connects the maxilla and the mandible and promoting their interaction + Inhibits mandibular shifting
Patient satisfaction and quality of life: Invisalign vs conventional fixed appliances. Both showed similar results in all dimensions tested, except:
Patient satisfaction; Aesthetics during treatment; Eating and chewing;
Eating and chewing
Asymmetric dental arch treatment with Forsus fatigue appliances: What can be the side effect of a unitlateral forsus appliance?:
1. No efficiency if not using a bilateral appliance
2. no effect on the occlusal plane
3. It helps to fix the Class II bilaterally
4. Canting of the occlusal plane
Canting of the occlusal plane
Morphologic and gene expression analysis of periodontal ligament fibroblasts subjected to pressure: when applying force on PDL:
A. no change is seen in cells morphology in deciduous or permanent teeth.
B. PDL culture's sorting and opticell pressure application model are recommended for in-vitro PDL experiments.
C. no vital fibroblasts can be sorted out of a PDL's of deciduous or permanent teeth.
D. fibroblast don't take part in PDL remodeling.
B. PDL culture's sorting and opticell pressure application model are recommended for in-vitro PDL experiments.
2. comparing fibroblasts with or without force application:
A. PDL fibroblasts change their morphology and adhesion complexes is response to pressure application.
B. DKK2 is expressed on fibroblast before force application.
C. ADMTS1 is upregulated in the teeth under force application.
D. all the above
When using TAD's in the anterior vestibular maxilla the safest zone is:
Between canine and lateral
Long-term dental stability after orthognathic surgery: a systematic review.
What were the OJ and OB changes? (Cl. II and Cl. III)
A decrease in overjet for patients with skeletal class III, OJ increased in class II patients at long-term follow-up.
OB increased in class II patients, whereas class III showed variable results.
The lower incisor position was more stable vertically than horizontally; the latter- more variabile. Dentolabial changes corresponded to the normal ageing.
Efficiency of Upper Arch Expansion with the Invisalign System: The average efficiency of bodily expansion movement for the maxillary first molar was:10/20/30/50%?
The average efficiency of bodily expansion movement for the maxillary first molar was 36% (Standard deviation of 29.32%).
Aligners could increase the arch width, but expansion was achieved by tipping movement. The evaluation of initial position and preset of sufficient root-buccal torque of posterior teeth were necessary due to the lower efficiency of bodily buccal expansion by the Invisalign system
Does overbite reduction affect smile esthetics? maxillary incisor intrusion arch or flat anterior bite plate. What the main esthetic effect?
Both overbite reduction methods caused a decrease in incisor display and flattening of the smile arc. Smiles were improved in some patients by the end of treatment. However, reduction in incisor display persisted. Clinicians should take precautions to prevent negative effects of overbite reduction
A comparison of 2 extraction protocols (4/4 vs 4/5) showed change in: Incisor retraction/Molar protraction/Mandibular plane/Vertical angle
Extraction of mandibular second premolars enhances Class II molar correc- tion, with greater mesial first molar movement and less distal incisor movement. Neither extraction pattern has an effect on the MPA or the vertical dimension (ie, there was no “wedge effect”).
Bone depth and thickness of different infrazygomatic crest miniscrew insertion paths:
1. Maximum bone depth present at 13 mm insertion (gingival tipping 50?and a distal tipping angle of 30)
2. Maximum bone thickness present at 17 mm insertion (gingival tipping of 70 and a distal tipping angle of 30)
3. Both are right 4. Both are wrong
Both are true! There was a significant negative correlation between bone depth and bone thickness
Position of laterals adjacent to impacted canines: For Palatal and Buccal
Palatal:Laterals mesiobuccal rotation, mesial angulation, and buccal root torque and first premolars mesiobuccal rotation. Buccal: mesiobuccal rotation and significant palatal root torque.
root hooks more prevalent in BICs.
Comparison of achieved and predicted tooth movement: First premolar extraction treatment. what happened compared to Invisalign ClinCheck prediction?
First molars achieved greater mesial tipping and translation than predicted, Central incisors achieved less retraction and greater lingual crown torque than predicted.
Treatment effects of the Carriere Motion: Palatal plane? OJ OB? incisor proclination?
A clockwise rotation (3.98) of the functional occlusal plane in the treatment group occurred during phase I; a substantial rebound (3.68) occurred during phase II. Overjet and overbite improved during treatment, as did molar relationship; the lower incisors proclined (4.28).
Risk factors associated with open gingival embrasures after orthodontic treatment:
What has the higher incidence? Maxillary or Mandibular incisors?
22% between the maxillary central incisors and 36% between the mandibular central incisors
Lingual movement of the incisors, distance from the contact point to the alveolar crest after treatment, antero-posterior overlap of the two central incisors before treatment in the maxilla, and distance from the contact point to the alveolar crest after treatment in the mandible were associated with the occurrence of open gingival embrasures (P , .05).
In the mandible, the amount of intrusion was significantly related to severity