This document discusses the development of occlusion from birth through adulthood. It begins by defining key occlusion terms like ideal occlusion, normal occlusion, and functional occlusion. It then describes the major periods of occlusal development: pre-dental, deciduous dentition, mixed dentition, and permanent dentition. For each period, it details the anatomy, eruption sequence and timing of teeth, common occlusal relationships, and factors that influence occlusion development. The mixed dentition period is subdivided into transitional phases where the primary and permanent teeth exchange. Spacing and shifts in molar and incisor relationships accommodate the larger permanent teeth.
Differences between primary and permanent teeth and importanceKarishma Sirimulla
This is a small brief presentation and contains basic differences between primary and permanent dentition an also an added note on importance of young permanent molar and its management clinically
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
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Differences between primary and permanent teeth and importanceKarishma Sirimulla
This is a small brief presentation and contains basic differences between primary and permanent dentition an also an added note on importance of young permanent molar and its management clinically
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
Ozempic: Preoperative Management of Patients on GLP-1 Receptor Agonists Saeid Safari
Preoperative Management of Patients on GLP-1 Receptor Agonists like Ozempic and Semiglutide
ASA GUIDELINE
NYSORA Guideline
2 Case Reports of Gastric Ultrasound
NVBDCP.pptx Nation vector borne disease control programSapna Thakur
NVBDCP was launched in 2003-2004 . Vector-Borne Disease: Disease that results from an infection transmitted to humans and other animals by blood-feeding arthropods, such as mosquitoes, ticks, and fleas. Examples of vector-borne diseases include Dengue fever, West Nile Virus, Lyme disease, and malaria.
share - Lions, tigers, AI and health misinformation, oh my!.pptxTina Purnat
• Pitfalls and pivots needed to use AI effectively in public health
• Evidence-based strategies to address health misinformation effectively
• Building trust with communities online and offline
• Equipping health professionals to address questions, concerns and health misinformation
• Assessing risk and mitigating harm from adverse health narratives in communities, health workforce and health system
Basavarajeeyam is an important text for ayurvedic physician belonging to andhra pradehs. It is a popular compendium in various parts of our country as well as in andhra pradesh. The content of the text was presented in sanskrit and telugu language (Bilingual). One of the most famous book in ayurvedic pharmaceutics and therapeutics. This book contains 25 chapters called as prakaranas. Many rasaoushadis were explained, pioneer of dhatu druti, nadi pareeksha, mutra pareeksha etc. Belongs to the period of 15-16 century. New diseases like upadamsha, phiranga rogas are explained.
These simplified slides by Dr. Sidra Arshad present an overview of the non-respiratory functions of the respiratory tract.
Learning objectives:
1. Enlist the non-respiratory functions of the respiratory tract
2. Briefly explain how these functions are carried out
3. Discuss the significance of dead space
4. Differentiate between minute ventilation and alveolar ventilation
5. Describe the cough and sneeze reflexes
Study Resources:
1. Chapter 39, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 34, Ganong’s Review of Medical Physiology, 26th edition
3. Chapter 17, Human Physiology by Lauralee Sherwood, 9th edition
4. Non-respiratory functions of the lungs https://academic.oup.com/bjaed/article/13/3/98/278874
Rasamanikya is a excellent preparation in the field of Rasashastra, it is used in various Kushtha Roga, Shwasa, Vicharchika, Bhagandara, Vatarakta, and Phiranga Roga. In this article Preparation& Comparative analytical profile for both Formulationon i.e Rasamanikya prepared by Kushmanda swarasa & Churnodhaka Shodita Haratala. The study aims to provide insights into the comparative efficacy and analytical aspects of these formulations for enhanced therapeutic outcomes.
Title: Sense of Taste
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
Integrating Ayurveda into Parkinson’s Management: A Holistic ApproachAyurveda ForAll
Explore the benefits of combining Ayurveda with conventional Parkinson's treatments. Learn how a holistic approach can manage symptoms, enhance well-being, and balance body energies. Discover the steps to safely integrate Ayurvedic practices into your Parkinson’s care plan, including expert guidance on diet, herbal remedies, and lifestyle modifications.
Recomendações da OMS sobre cuidados maternos e neonatais para uma experiência pós-natal positiva.
Em consonância com os ODS – Objetivos do Desenvolvimento Sustentável e a Estratégia Global para a Saúde das Mulheres, Crianças e Adolescentes, e aplicando uma abordagem baseada nos direitos humanos, os esforços de cuidados pós-natais devem expandir-se para além da cobertura e da simples sobrevivência, de modo a incluir cuidados de qualidade.
Estas diretrizes visam melhorar a qualidade dos cuidados pós-natais essenciais e de rotina prestados às mulheres e aos recém-nascidos, com o objetivo final de melhorar a saúde e o bem-estar materno e neonatal.
Uma “experiência pós-natal positiva” é um resultado importante para todas as mulheres que dão à luz e para os seus recém-nascidos, estabelecendo as bases para a melhoria da saúde e do bem-estar a curto e longo prazo. Uma experiência pós-natal positiva é definida como aquela em que as mulheres, pessoas que gestam, os recém-nascidos, os casais, os pais, os cuidadores e as famílias recebem informação consistente, garantia e apoio de profissionais de saúde motivados; e onde um sistema de saúde flexível e com recursos reconheça as necessidades das mulheres e dos bebês e respeite o seu contexto cultural.
Estas diretrizes consolidadas apresentam algumas recomendações novas e já bem fundamentadas sobre cuidados pós-natais de rotina para mulheres e neonatos que recebem cuidados no pós-parto em unidades de saúde ou na comunidade, independentemente dos recursos disponíveis.
É fornecido um conjunto abrangente de recomendações para cuidados durante o período puerperal, com ênfase nos cuidados essenciais que todas as mulheres e recém-nascidos devem receber, e com a devida atenção à qualidade dos cuidados; isto é, a entrega e a experiência do cuidado recebido. Estas diretrizes atualizam e ampliam as recomendações da OMS de 2014 sobre cuidados pós-natais da mãe e do recém-nascido e complementam as atuais diretrizes da OMS sobre a gestão de complicações pós-natais.
O estabelecimento da amamentação e o manejo das principais intercorrências é contemplada.
Recomendamos muito.
Vamos discutir essas recomendações no nosso curso de pós-graduação em Aleitamento no Instituto Ciclos.
Esta publicação só está disponível em inglês até o momento.
Prof. Marcus Renato de Carvalho
www.agostodourado.com
- Video recording of this lecture in English language: https://youtu.be/kqbnxVAZs-0
- Video recording of this lecture in Arabic language: https://youtu.be/SINlygW1Mpc
- Link to download the book free: https://nephrotube.blogspot.com/p/nephrotube-nephrology-books.html
- Link to NephroTube website: www.NephroTube.com
- Link to NephroTube social media accounts: https://nephrotube.blogspot.com/p/join-nephrotube-on-social-media.html
Knee anatomy and clinical tests 2024.pdfvimalpl1234
This includes all relevant anatomy and clinical tests compiled from standard textbooks, Campbell,netter etc..It is comprehensive and best suited for orthopaedicians and orthopaedic residents.
2. INTRODUCTION
• The term occlusion has both static and dynamic aspects
• Static refers to form, alignment and articulation of teeth within & between dental arches and
relationship of teeth to their supporting structures
• It may be defined also as the contact relationship of the teeth in function or parafunction
3. • IDEAL OCCLUSION
• Pre-conceived theoretical concept of occlusal structural & functional relationships that include idealized
principles and characteristics that an occlusion should be
• NORMAL OCCLUSION:
• It is class I relationship of maxillary & mandibular 1st molars in centric occlusion
• PHYSIOLOGIC OCCLUSION:
• Occlusion that deviates in one or more ways from ideal yet it is well adapted to that particular environment is
esthetic & shows no pathologic manifestations
4. • FUNCTIONAL OCCLUSION:
• An arrangement of teeth which will provide highest efficiency during excursive movements of mandible which
is necessary during function
• BALANCED OCCLUSION:
• An occlusion in which balance & equal contacts are maintained throughout entire arch during all excursions of
mandible
• Others : Therapeutic occlusion, Traumatic Occlusion, Centric Occlusion etc.
5. PERIODS OF OCCLUSAL DEVELOPMENT:
• PRE-DENTAL PERIOD
• DECIDUOUS DENTITION PERIOD
• MIXED DENTITION PERIOD
• PERMANENT DENTITION PERIOD
6. PRE-DENTAL PERIOD
• The period after birth during which the neonate does not have teeth
• Lasts for 6 months
7. GUM PADS
• Alveolar processes at the time of birth
• Pink, firm and are covered by a dense layer of fibrous periosteum
8. • horse-shoe shaped and developed in two parts
• Labio-buccal portion & lingual portion
• Two portions of gum pads are separated by dental groove
9. • Gum pad are divided into 10 segments by certain grooves called transverse grooves
• Each of these segment consist of developing deciduous tooth sac
• Gingival groove separate gum pads from palate & floor of the mouth
10. • Transverse groove between canine & and first deciduous molar segment is called the lateral
sulcus
• Lateral sulci are useful in judging the inter-arch relationship at a very early stage
• The lateral sulcus of the mandibular arch is normally more distal to that of the maxillary arch
Lateral sulcus
11. • The upper and lower gum pads are almost similar to each other
• The upper gum pad is both wider as well as longer than the mandibular gum
pad
• Thus when upper and lower gum pads are approximated, there is a complete
overjet all around
12. • Contact occurs b/w upper & lower gum pads in first molar region and a space exists between
them in anterior region
• This infantile open bite is considered normal and it helps in suckling Infantile open bite for
suckling
13. STATUS OF DENTITION
• Neonate is without teeth for about 6 months of life
• At birth gum pads are not sufficiently wide to accommodate developing
incisors, which are crowded in their crypts
• During 1st year of life gum pads grow rapidly permitting incisors to erupt in
good alignment
14. • Teeth that are present at the time of birth are called natal teeth.
• Teeth that erupt during the first month of age are called neonatal teeth.
• The natal and neonatal teeth are mostly located in the mandibular incisor region and show a
familial tendency.
15. DECIDUOUS DENTITION PERIOD
• Initiation of primary tooth buds occurs during first six weeks of intra-uterine
life
• Primary teeth begin to erupt at age of about 6 months
• Eruption time for primary teeth : 21/2 - 3 1/2 years
16. ERUPTION AGE AND SEQUENCE OF DECIDUOUS
DENTITION
• A-B-D-C-E
• 6months – 3 Years
18. SPACING IN DECIDUOUS DENTITION
• Spacing usually present b/w deciduous teeth & called physiological spaces or developmental
spaces
• Spaces in primary dentition is important for normal development of permanent dentition
19. • Absence of spaces in primary dentition can cause crowding (when the larger
permanent teeth erupt)
• Spacing invariably is seen mesial to maxillary canines & distal to mandibular
canines
20. • These physiological spaces are called primate spaces or simian spaces or
anthropoid spaces as they are seen commonly in primates
• These spaces help in placement of the canine cusps of the opposing arch
21. FLUSH TERMINAL PLANE
• Mesio-distal relation b/w distal surfaces of upper & lower second deciduous
molars is called the terminal plane
• A normal feature of deciduous dentition is a flush terminal plane where distal
surfaces of upper & lower second deciduous molars are in same vertical plane
22. DEEP BITE
• A deep bite may occur in initial stages of development
• Deep bite is accentuated by fact that deciduous incisors are more upright
than their successors
23. • Lower incisal edges often contact cingulum area of maxillary incisors
• This deep bite is later reduced due to following factors:
a. Eruption of deciduous molars
b. Attrition of incisors
c. Forward movement of mandible due to growth
24. MIXED DENTITION PERIOD
• Mixed dentition period begins at approximately 6 years of age with eruption
of 1st permanent molars
• During mixed dentition period, deciduous teeth along with some permanent
teeth are present in oral cavity
25. MIXED DENTITION PERIOD CLASSIFIED INTO THREE
PHASES
• 1st transitional period
• Inter-transitional period
• 2nd transitional period
26. 1ST TRANSITIONAL PERIOD
• Characterized by emergence of 1st permanent molars & exchange of deciduous incisors with
permanent incisors
• 1st permanent molar erupts at 6 yrs guided into dental arch by distal surface of 2nd
deciduous molar
27. • Mesio-distal relation b/w distal surfaces of upper and lower 2nd deciduous molars can be of
three types:
1. FLUSH TERMINAL PLANE
2. DISTAL STEP
3. MESIAL STEP
28. FLUSH TERMINAL PLANE
• Distal surface of upper & lower 2nd deciduous molars are in one vertical
plane
• Normal feature of deciduous dentition
• Erupting 1st permanent molars may also be in a flush or end on relationship
29. • For transition of such an end on molar relation to a Class I molar relation,
lower molar has to move forward by about 3-5 mm relative to upper molar
• Utilization of physiologic spaces & leeway space in lower arch & by differential
forward growth of mandible
• Shift in lower molar from a flush terminal plane to a Class I relation can occur
in two ways - Early and Late shift
30. EARLY SHIFT
• Early shift occurs during early mixed dentition period
• Eruptive force of 1st permanent molar is sufficient to push deciduous 1st &
2nd molars forward in arch to close primate space & establish a Class I molar
relationship
• Since this occurs early in mixed dentition period it is called early shift
31. LATE SHIFT
• Many children lack primate space & thus erupting permanent molars are unable to move
forward to establish Class I relationship
• In these cases, when deciduous second molars exfoliate permanent 1st molars drift mesialy
utilizing leeway space
• This occurs in late mixed dentition period & is thus called late shift
32. MESIAL STEP TERMINAL PLANE
• Distal surface of lower second deciduous molar is more mesial than that of upper
• Permanent molars erupt directly into Angle's Class I occlusion
• Mesial step terminal plane most commonly occurs due to early forward growth of mandible
33. • If differential growth of mandible in a forward direction persists, it can lead to Angle's Class III
molar relation
• If forward mandibular growth is minimal, it can establish a Class I molar relationship
34. DISTAL STEP TERMINAL PLANE
• Distal surface of lower second deciduous molar being more distal to that of the upper
• Thus erupting permanent molars maybe in Angle's Class II occlusion
35.
36. EXCHANGE OF INCISORS
• During first transitional period deciduous incisors are replaced by permanent incisors
• Mandibular central incisors : 1st to erupt
• Permanent incisors > deciduous incisors
37. • This difference b/w amount of space needed for accommodation of incisors & amount of
space available for this is called Incisal liability
• Incisal liability (maxillary arch ) : about 7 mm
• incisal liability (mandibular arch ) : about 5 mm
38. • The incisal liability is overcome by the following factors
• A. Utilization of interdental spaces seen in primary dentition:
• Physiologic or developmental spaces that exist in primary dentition are utilized to partly
account for incisal liability
• Permanent incisors are much more easily accommodated in normal alignment in cases
exhibiting adequate inter-dental spaces than in an arch that has no space
39. • B. Increase in inter - canine width:
• During transition from primary incisors to permanent incisors, increase in inter-canine width
of both maxillary & mandibular arches takes place
• This is an important factor that allows much larger permanent incisors to be accommodated
in arch previously occupied by the deciduous incisors
40. • C. Change in incisor inclination
• One of differences b/w deciduous & permanent incisors is their inclination
• Primary incisors are more upright than permanent incisors
• Since permanent incisors erupt more labially inclined, they tend to increase dental arch
perimeter
41. • A. Primary incisors are more upright in alignment than permanent incisors
• B. Permanent incisors are more labialy inclined
42.
43. INTER - TRANSITIONAL PERIOD
• In this period the maxillary and mandibular arches consist of sets of deciduous and
permanent teeth.
• Between permanent incisors and first permanent molars are deciduous molars and canines.
• This phase during the mixed dentition period is relatively stable and no change occurs.
44. 2ND TRANSITIONAL PERIOD
• 2nd transitional period is characterized by replacement of deciduous molars &
canines by premolars & permanent cuspids respectively
• Combined mesio-distal width of permanent canines & premolars is usually
less than that of deciduous canines and molars & this Surplus space is called
leeway space of Nance
45. • Leeway space (mandibular arch) : about 3.4mm (1.7mm on each side of the
arch)
• Leeway space (maxillary arch) : about 1.8mm (0.9 mm on each side of the
arch)
• Excess space available after exchange of deciduous molars & canines is
utilized for mesial drift of mandibular molars to establish Class I molar relation
46. UGLY DUCKLING STAGE
• Sometimes a transient or self correcting malocclusion is seen in maxillary
incisor region b/w 8-9 years of age
• This is a particular situation seen during eruption of permanent canines
47. • As developing permanent canines erupt, they displace roots of lateral incisors
on to roots of central incisors, which also get displaced mesialy
• A resultant distal divergence of crowns of two central incisors causes a
midline spacing
48. • Described by Broadbent ( hence also known as Broadbent phenomenon) as
ugly duckling stage as children tend to look ugly during this phase of
development
• This condition usually corrects by itself when canines erupt & pressure is
transferred from roots to coronal area of incisors
49. PERMANENT DENTITION PERIOD
• Permanent dentition forms within jaws soon after birth, except for cusps of
first permanent molars, which form before birth
• Permanent incisors develop lingual or palatal to deciduous incisors and move
labially as they erupt
• Premolars develop below diverging roots of deciduous molars
50. • Eruption sequence of permanent dentition may exhibit variation: 6-1-2-4-3-5-7
or 6-1-2-3-4-5-7
• In mandibular arch sequence is: 6-1-2-3-4-5-7 or 6-1-2-4-3-5-7
51. OCCLUSAL CURVATURES & AXIAL POSITION
a. Curve of Spee
b. b. Curve of Wilson
c. c. Sphere of Monson
d. d. Axial position
52. CURVE OF SPEE
• The curvature which begins at the tip of canines & follows buccal cusp tips of
premolars & molars posteriorly, when viewed from their facial aspect
• Two dimensional and curves upward from anterior to posterior
53. • Inclination of some of individual posterior teeth must be offset from vertical
long axis of body, if their occlusal surfaces are to conform to this curve
• Maxillary molar roots are inclined mesialy & mandibular molar roots distally
54. CURVE OF WILSON
• Medio-lateral curvature of occlusal plane of posterior teeth
• Two dimensional, at right angle to Curve of Spee
• Purpose of this arc in occlusal curvature is to complement paths of condyles
during movements of mandible
55. • Crowns of mandibular posterior teeth must incline to lingual, while crowns of
maxillary posterior teeth must incline toward buccal
• This curve becomes deeper posteriorly, so that molars inclination is greater
than that of premolars
• Because of this curve & associated tooth inclinations, buccal cusps of
mandibular molars & lingual cusps of maxillary molars usually appear to be
longer
56. SPHERE OF MONSON
• Compensating Occlusal Curvature
• Three dimensional curvature of the occlusal plane, which is the combination
of the Curve of Spee and the Curve of Wilson
• This curvature is in form of a portion of a ball, or sphere
• This curvature is concave for mandibular arch & convex for the maxillary arch
57. AXIAL POSITION
• Inclination of a tooth from a vertical axis
• Normally described in mesio-distal & facio-lingual directions
• It is normally described in terms of root's inclination, which means that crown
is normally inclined in opposite direction
58. • These inclinations are necessary for proper occlusal & incisal function of teeth
• As these axial positions are described, it should be of value to relate them to
individual tooth's functions, as well as its inclination relative to Curves of Spee
and Wilson