28 Questions
What is the differential diagnosis for Type 1 gingival smile?
Increased keratinized gingiva width
What constitutes the subgroup for Type 2 gingival smile?
Normal KG
Where can the '10 Commandments of Smile Esthetics' be found?
Maringá July/August 2014
What is the main topic of the article by Robert A Levine in the Compendium of continuing education in dentistry?
Differential Diagnosis of Gingival Smile
What is the focus of the article in the JCO Online archive from March 2005?
Macroesthetics
Where can information about Altered Passive Eruption Diagnosis and Treatment be found?
Dental Press J. Orthod. Maringá July/August 2014
What is the common focus of the articles by Proffit W. in the Contemporary Orthodontics book?
'Balanced Smile Components'
What is described as Type 2 in the Differential Diagnosis of Gingival Smile?
'Normal KG'
Which component of a balanced smile refers to the anteroposterior position of the jaws in relation to the cranial base?
Sagittal dimension
What type of smile is characterized by elevators of the upper lip?
Cuspid smile
Which percentage of the population is associated with the commissure smile?
67%
In the context of a balanced smile, what does the term 'macroesthetics' refer to?
Broad smile vs lateral negative space
According to Dr. David Sarver, which component of a balanced smile focuses on the rest position?
Miniesthetics
What is the primary focus of the transverse dimension in relation to a balanced smile?
Lateral negative space
'Asymmetry' in the context of smile aesthetics is addressed in which type of smile?
Complex smile
'Rest position' in the context of a balanced smile is primarily associated with which component?
'Miniesthetics'
'Smile (profile)' also addresses which aspect in addition to the anteroposterior position of jaws and incisor inclination?
'Asymmetry'
'Bracket Positioning for Smile Arc Protection' is discussed in which publication?
'JCO 2017'
What type of smile is static, sustained, and fairly reproducible?
Posed smile
Which smile involves the contraction of both zygomaticus major and orbicularis oculi muscles?
Duchenne smile
What have researchers used to differentiate Duchenne smiles from non-Duchenne smiles for biometric applications?
Active appearance models
How many components are included in a balanced smile?
Eight components
Which type of smile should expose minimal gingiva and have symmetric and harmonious gingival contour?
Ideal smile
What can gummy smiles be classified into based on the amount of gingival display?
Three degrees
What can result in altered passive eruption and affect the smile?
Short tooth syndrome
What increases dramatically during adolescence and tapers off in later years?
Incisor crown height
What can impact orthodontic diagnosis and treatment planning?
Interactions of hard tissues, soft tissues, and growth over time
What type of treatment options can vary for gummy smile?
Both orthodontics and orthognathic surgery
Study Notes
- Smile can be classified into two types: posed and spontaneous
- Posed smile is static, sustained, and fairly reproducible, while spontaneous smile is involuntary and represents enjoyment or maximal contraction
- Duchenne smile, also known as a genuine or true smile, involves the contraction of both zygomaticus major and orbicularis oculi muscles
- Researchers have used active appearance models to differentiate Duchenne smiles from non-Duchenne smiles for biometric applications
- Eight components of a balanced smile include vertical dimension, incisor display at rest and during speech and smile, philtrum and intercommissural distances, smile arc, incisor show on smile versus rest versus speaking, and upper lip curvature and length
- Interactions of hard tissues, soft tissues, and growth over time can impact orthodontic diagnosis and treatment planning
- Ideal smile should expose minimal gingiva (unless young or female), have symmetric and harmonious gingival contour, and have anterior and posterior segments in harmony with the smile arc
- Gummy smile can be classified into degrees based on the amount of gingival display, and treatment options can vary from orthodontics to orthognathic surgery
- Measurements for accurate decision making in orthodontics include clinical and anatomic crown length, width of keratinized tissue, and radiographic location of the cemento-enamel junction
- Incisor crown height increases dramatically during adolescence and tapers off in later years, and interactions of hard tissues, soft tissues, and growth over time can impact orthodontic diagnosis and treatment planning
- Short tooth syndrome can result in altered passive eruption, which can affect the smile and require treatment management.
Test your knowledge of dental aesthetics with this quiz covering topics such as smile frames, sagittal dimension, and anteroposterior position of jaws and incisors. References to Dr. David Sarver and Thomas R. Pitts are included.
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