Buccolingual malrelationship of upper and lower
teeth.Anterior or posterior (unilateral or bilateral) with or
without mandibular displacement.
Buccal crossbite: Lower teeth occlude buccal to
corresponding upper teeth .
Lingual crossbite (scissors bite): Lower teeth occlude
lingual to palatal cusps of upper teeth.
Terminology in Orthodontics
Copyright by Department of Orthodontics
University of Dental Medicine, Yangon
Feel free to request to take it down this slide if you are copyright owner.
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Buccolingual malrelationship of upper and lower
teeth.Anterior or posterior (unilateral or bilateral) with or
without mandibular displacement.
Buccal crossbite: Lower teeth occlude buccal to
corresponding upper teeth .
Lingual crossbite (scissors bite): Lower teeth occlude
lingual to palatal cusps of upper teeth.
Terminology in Orthodontics
Copyright by Department of Orthodontics
University of Dental Medicine, Yangon
Feel free to request to take it down this slide if you are copyright owner.
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.for more details please visit
www.indiandentalacademy.com
Class 2 division 2 malocclusion /certified fixed orthodontic courses by India...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
Extra oral examination /certified fixed orthodontic courses by Indian dental ...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
Above questions and answers will help you get lots of information about invisalign treatment. Visit a well-trained dentist to know whether invisalign is suitable for you.
a brief description of the various diagnostic methods used to classify deep bite and open bite and various treatment modalities used at various stages of it.
A SEMINAR ON DEVELOPMENT OF NORMAL OCCLUSION COVERING NORMAL CONDITIONS OF DECIDOUS DENTITION, MIXED DENTITION AND PERMANENT DENTITION SO THAT IT CAN BE UNDERSTOOD WHAT IS NORMAL.
Corrective orthodontics- deep bite & open biteDrSusmita Shah
Management of deep bite and open bite (anterior, posterior) has been covered in this presentation. Removable as well as fixed corrective orthodontic treatment options have been mentioned.
Cross bite
Definition: failure of the two dental arches to occlude normally in bucco-lingual or labiolingual direction due to:
1- Localized problem of tooth position or alveolar growth
2- Gross disharmony between maxilla and mandible
Anterior cross bite:
= can be present in primary as well as permanent dentition
= it may involve one or more teeth
= it is one of the most common malocclusion present in children
= it should be treated immediately because it is very rarely to self-correcting
= it can be predisposing to the development of class III malocclusion if two or more teeth are involved
Causes:
= over retained deciduous teeth
= crowding
= cleft palate
Posterior cross bite:
Caused by prolonged retention of deciduous molar
= the most common type of posterior cross bite is usually when the buccal cusps of maxillary posterior teeth occlude lingual to the buccal cusp of opposing mandibular teeth
= in a majority of posterior cross bite cases, both the opposing teeth are out of position
Therefore, the treatment consists of reciprocal movement of both teeth
The cross bite may involve one or more than one tooth and it may be unilateral or bilateral
The cross bite may originate in: dentition, craniofacial skeleton, and temporomandibular musculature
Types of cross bite:
1- Dental:
This condition involves only the localized tipping of a tooth or teeth and does not affect the size or shape of the basal bone
Muscular adjustment is always being made to provide an adequate accommodative occlusion
The midline coincides when the jaws are a part and diverge as the teeth come into occlusion
The most important diagnostic single point will be a symmetry of the dentoalveolar arch
2- Muscular:
This group includes all problems in malfunction of the dentofacial musculature
Any persistent alteration in the normal synchrony of the mandibular movement or muscle contraction may result in distorted growth of facial bones or abnormal position of the teeth
A simple lip sucking habit may give raise to class II dentition and profile. The sucking habit itself is a complicated neuromuscular reflex involving many muscles of the face, temporomandibular articulation and tongue
N: B:
= continued sucking may narrow the maxillary dental arch, this contraction of the maxillary arch give raise to another complicated neuromuscular habit pattern, mandibular retraction
= the narrowing of the maxillary arch results in tooth interference, and the mandible is then shifted posteriorly by the muscles to position of better occlusal function which is called compulsive disto-occlusion (Hotz)
= there is no clear cut differentiation between the dental and muscular type except for treatment, that for dental, teeth must be moved but in muscular, the adjustment often be gained by occlusal equilibration, which permits changes in the muscular reflexes governing mandibular positioning
3- Osseous:
= Aberrations in bony growth may give raise to cross bite in two ways:
1- A symmetric growth of maxill
Description about mandibular movements, bennett movement, posselt's envelope of motion, sears axiom, concepts and schemes of complete denture occlusion. Detailed description of balanced occlusion, monoplane occlusion and lingualized occlusion. Selective grinding for both monoplane and semianatomic teeth. Added references for further readings.
VARIOUS CLASSIFICATION THAT WE USE IN ORTHODONTICS O DIFFERNTIATE BETWEEN MALOCCLUSION OR TO COME TO A COMMON SYSTEM OF CLASSIFICATION.CLASSIFICATION OF MALOCCLUSION IN ORTHODONTICS, CANINE CLASSIFICATION, INCISOR CLASSIFICATION, MOLAR CASSIFICATION, PREMOLAR CLASSIFICATION. KATZ CLASSIFICATION, ANGLE CLASSIFICATION
Extractions in orthodontics /certified fixed orthodontic courses by Indian de...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Extraction in orthodontics /certified fixed orthodontic courses by Indian den...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
Dr. Rahul VC Tiwari - Fellowship In Orthognathic Surgery - Jubilee Mission Medical College Hospital and Research Center, Thrissur, Kerala - 19TH PUBLICATION - IJOHMR
9.Umrani S, Mathew P, Hemant AV, Tiwari R, Dixit H. A review on Extraction versus Non-extraction on Facial and Smile Esthetics. Int J Oral Health Med Res 2017;4(3):83-86.
This contains an extensive overview of the intra oral examination that should be done for complete denture patients.
any corrections are more than welcome.
please do leave a comment and let me know if the presentation is helpful!!
The presentation is available on request. Mail me at apurvathampi@gmail.com
seminar on growth and development in orthodontics. thi ssemianr focus on importance of growth and development with emphasis on scamoon's growth curve and cephalocaudal gradient of growth
A brief presentation of how to band, when to band, why to band, where to band, its disdvantages and advantages along with technique. also describing briefly bonding, its mechanism how it is being done, advantages, disadvantages and techniques
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
Andreas Schleicher presents at the OECD webinar ‘Digital devices in schools: detrimental distraction or secret to success?’ on 27 May 2024. The presentation was based on findings from PISA 2022 results and the webinar helped launch the PISA in Focus ‘Managing screen time: How to protect and equip students against distraction’ https://www.oecd-ilibrary.org/education/managing-screen-time_7c225af4-en and the OECD Education Policy Perspective ‘Students, digital devices and success’ can be found here - https://oe.cd/il/5yV
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
The Art Pastor's Guide to Sabbath | Steve ThomasonSteve Thomason
What is the purpose of the Sabbath Law in the Torah. It is interesting to compare how the context of the law shifts from Exodus to Deuteronomy. Who gets to rest, and why?
3. Contents
• Introduction
• Normal occlusion - A brief overview
• What is Malocclusion?
• Classification of Malocclusion
• Etiology
• Development of Malocclusion
• Conclusion
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17. Introduced in 1899(Dental Cosmos)
Based on A-P relationship of the dental arches.
Upper first permanent molar – Key to occlusion
Constant position relative to Key Ridge
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19. Angle’s classification has 4 groups :-
o Normal occlusion
o Class I Malocclusion
o Class II Malocclusion – Division 1
- Division 2
o Class III Malocclusion
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20. Normal occlusion :
Normal molar relation
Line of occlusion-smooth
catenary curve
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21. Class I Malocclusion :
Line of occlusion - irregular
Normal molar relationship
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22. Includes variations such as :
Open bite
Deep bite
Crossbite
Bimaxillary protusion
Combinations – Deep bite+Bimaxillary protusion
- Open bite+Bimaxillary protusion
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23. Class II Division 1
1. Proclined U anteriors
2. ‘V’ shaped maxillary arch.
3. Supraversion of the lower
anteriors.
4. Abnormal muscle activity.
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24. Class II Division 2
1. Retroclined upper centrals &
labially tipped upper laterals
2. Wide maxillary arch.
3. Supraversion of lower incisors.
4. Exaggerated curve of spee.
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25. Class II Div 1 / 2 Subdivision:
Cl II molar on one side , Cl I molar on other side.
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26. Class III
Mesiocclusion / Prenormal
Occlusion
Lower dental arch mesial to
upper dental archwww.drdentiste.com
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27. Class IV ??
Class II molar on one side & Class III on the other side
Cl III subdivision : Cl III on one side, Cl I on one side.
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28. Plus points of Angle’s classification
1)Simple & universally acceptable.
2)In original article, described each contacting
cuspal incline, emphasis on first molar in
subsequent revision.
Angle’s prototype
ideal occlusion
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29. Limitations of Angle’s system of classification :
1)Skeletal malocclusion not considered.
2) Only A-P discrepancy
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30. 3) Position of the first molar not always stable.
a. Relation not stable to cranial base
b. Mesial migration , rotations , diff stages of development
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32. 4) Severity of MO ?
5) Etiology ?
6) Missing first molars ??
7) Individual tooth malpositions not considered
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33. 8) Deciduous / Mixed dentition.
Angle classification revisited -AJO 1992 ; Sep By Morton Katz
Modified Class I
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34. If not First molar ……then what ???
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36. British Standard Classification :
r classification – based on relation of L incisor edges to U central
cingulum p
d & Wayman (1964)
ied by Williams & Stephens (1992) – improve inter-examiner reliability
Cl I Cl II div 1 Cl II div 2 Cl II
intermediate
Cl III
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37. Class I malocclusion
Dental : Normal molar relationship.
Skeletal : Normal antero-posterior relationship
between the maxilla and the mandible.
Extra oral : Orthognathic profile
Soft tissue : Normal muscle function.
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38. Bimaxillary protrusion
Entire dentition forward wrt facial profile
3 Criteria for Bimaxillary protusion : (Proffit)
1. Excessive separation of lips at rest(not >
4mm)
2. Excessive effort to bring the lips into
closure
3. Prominence of lips in profile view
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Saturday, February 11, 2017 38
40. Class II MO
Mn in distal relation with maxilla
Class II Div 1
Extra oral findings :
Profile – Convex
Retrognathic Mn
Acute Nasolabial angle
Retruded chin
Lip trap maybe present
Abn perioral muscle function
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41. Class II MO
Division 1
Intra oral findings:
1.Class II molar relation.
2.Proclined upper incisors.
3. ‘V’ shaped maxillary arch.
4.Supraversion of the lower anteriors.
5.Exaggerated curve of Spee.
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42. Class II Div 2
Extra oral findings:
•Pleasing profile
•Perioral muscle function
within normal limits
Depth of mentolabial
sulcus
Redundancy of L lip
•Chin projection prominent-
tends to mask Mn deficiency.
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43. Cl II Div 2
Intra oral findings :
Retroclined U centrals ,
Laterals in labioversion
Types of incisor patterns in Cl II Div 2
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44. Intra oral findings
•Minimal overjet
•Mx arch may be wider - Squarish
arch
•Mn labial gingivae traumatised
•Mn incisors crowded +
supraversion
•Deep bite
•Exaggerated curve of Spee
•Forced retrusion
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45. Class II MO
DentalSkeletal
•Maxillary dental protrusion
•Mesial drift of upper 1st
molars
•Mn deficiency
•Mx excess
•Both
Skeletal Cl II
Usually assoc with dental Cl II MO
Dental compensations seen - Protrusive Mn
Insicors
- Retrusive Mx
incisors
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46. N nasolabial angle (102 ± 8˚)
Protrusion of U anteriors
Deficiency of chin
L lip everted/redundant
Deep mentolabial sulcus
Lip incompetence
L inc supreerupt- deep bite
Facial appearance
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47. Small sized Mandible
Both body & ramus small
Clockwise rotation of Mn
Post facial height
Steeper Mn plane
Normal SNA
ANB, SNB
angle of convexity
A-B diff –WITS
True horiz- ‘A’ – normal
‘B’ – posterior
Mn inc – Mn plane angle
- N-B line
Mn inc – Occlusal plane
- FH
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48. Mn body small but ramus normal or length
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49. Mn body small,
Normal or ramus
N / post facial height
Mn plane flatter
Bony chin projection +++
Unit length of Mn maybe N
lower ant facial height
lips everted at rest
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50. Normal size –Retruded positio
ANB , Normal SNA, SNB
A-B diff on occlusal – WITS
Cranial base angle – obtuse
Glenoid fossa -posterior posit
Normal size, A-P unit length
lower ant facial height
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54. A-P plane
ANB, normal SNA
SNB
Angle of convexity
A-B diff wrt occusal
Occusal-steep, diff
True horiz- ‘A’ – normal
‘B’ – posterior
‘A’ anterior to ‘N’
Unit length of Mn
maybe normal wrt Mx
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55. Vertical plane
11 Lower Anterior facial ht
2. Steeper Mn plane
3. Molars ± Incisors position
inferior to palatal plane
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56. A-P maxillary excess
Mid face protrusion
Facial features :
Entire midface protrusion
vs dentoalv protrusion
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58. A-P maxillary excess
ANB,SNA,
normal SNB
A-B diff on occlusal
on True horiz
Angle of convexity
A-P Mx length
Mn length normal
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59. Maxillary excess & Mn deficiency
Most often both
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60. Dental Class II
Normal relation of Skeletal bases
Mx molars moved forward
Causes
Mx dental protusion
Mesial drift of upper 1st
molar
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61. Maxillary dental protusion
Diff from A-P Mx excess
Extra oral:
•Only lip protruded
•Convex profile
Intra oral:
•Overjet
•Gen Mx spacing & protuding U incisors
•Mn dentition normal
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63. Mesial drift of first perm molar
Causes :
1) Congenital absence/premature loss of E
2) Ectopic molar eruption
3) Congenital absence of Mx 2nd
PM
4) Displacement / Impacted 2nd
PM
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64. Class III MO
Mn in mesial relation with Maxilla
Growth & size of Mn - heredity
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65. Intra oral findings:
Mandibular incisors –
Cross bite, inclined lingually.
Maxillary arch constricted.
Extra oral findings:
Concave profile
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66. Cl III MO
Skeletal Dental
True Pseudo
Maxillary
Deficiency
Mandibular
Excess
Combination
of both
Flattening
of infra
orbital rim
& area adj
to nose
Chin protruded ?
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67. Class III molar & overjet
Functional assessment
True Cl III Pseudo Class III Compensated
Cl III
Negative overjet Positive overjet/
End-to-end incisal
Eliminate CO CR shift
Cl I MO Cl III MO
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