This document provides instructions for recording jaw relationships using the wax registration method. It describes establishing the facial contour, occlusal plane, and vertical dimension before making a registration of the centric relation. Care must be taken to ensure the wax is soft and the mandible moves in a smooth arc without translation when closing into the registration. The registration is then checked and assembled before being mounted on an articulator in the laboratory.
When treating a patient with a removable partial denture, the natural and artificial teeth, both functionally and esthetically, must co-exist in a harmonious relationship.
Occlusal harmony between a removable partial denture and the remaining natural teeth is a major factor in preservation of the surrounding structures.
In removable partial dentures, because of the attachment of the denture to abutment teeth, occlusal stresses can be transmitted directly to the abutment teeth and other supporting structures, which results in sustained stresses that may be more damaging than those transient stresses found in complete dentures.
When treating a patient with a removable partial denture, the natural and artificial teeth, both functionally and esthetically, must co-exist in a harmonious relationship.
Occlusal harmony between a removable partial denture and the remaining natural teeth is a major factor in preservation of the surrounding structures.
In removable partial dentures, because of the attachment of the denture to abutment teeth, occlusal stresses can be transmitted directly to the abutment teeth and other supporting structures, which results in sustained stresses that may be more damaging than those transient stresses found in complete dentures.
7-Try-in of the wax trial complete dentureAmalKaddah1
CLINICAL STEPS FOR COMPLETE DENTURE CONSTRUCTION
1- Diagnosis and Treatment Planning for Removable Prosthodontics
2- Preliminary Maxillary and mandibular impression procedures
3- Final Maxillary and mandibular impression procedures
4- Jaw Relation Registration
a.Introduction and the stomatognathic system
What 'occlusion' is and why it is important
b.Definitions.
c.Check denture foundation and Establishment of facial contour.
d.Establishment of the occlusal plane.
e.Importance of mounting the maxillary cast using Maxillary face-bow record and transfer.
f. Determination of vertical dimension of centric occluding relation.
g.Determination of centric and eccentric relations at the accepted vertical dimension.
5- Selection of Artificial Teeth
6- Prosthetic Problems and possible solutions in Setting –up of teeth for skeletal Class II and Class III arch relationship of completely edentulous patients.
7- Try-in of the wax trial complete denture.
8- Complete denture insertion (Delivery)
9- Managements of Post Insertion Problems and Complaints.
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Following the orientation of maxilla and determination of vertical
dimension, the final relation to be recorded is the horizontal relation.
This is the anteroposterior relation of the mandible to the maxilla in
the horizontal plane.
The horizontal relations can be classified as:
• Centric relation
• Eccentric relations – protrusive and lateral.
The maxillomandibular relationship in which the condyles articulate with the thinnest avascular portion of their respective discs with the complex in the anterior–superior position against the slopes of the articular eminencies. This position is independent of tooth contact. This position is clinically discernible when the mandible is directed superiorly and anteriorly. It is restricted to a purely rotary movement about the transverse horizontal axis
COMPLETE DENTURE CONSTRUCTION
1- Diagnosis and Treatment Planning for Removable Prosthodontics
2- Preliminary Maxillary and mandibular impression procedures
3- Final Maxillary and mandibular impression procedures
4- Jaw Relation Registration
a. Introduction and the stomatognathic system
What 'occlusion' is and why it is important
b. Definitions.
c. Check denture foundation and Establishment of facial contour.
d. Establishment of the occlusal plane.
e. Importance of mounting the maxillary cast using Maxillary face-bow record and transfer.
f. Determination of vertical dimension of centric occluding relation.
g. Determination of centric and eccentric relations at the accepted vertical dimension.
5- Selection of Artificial Teeth
6- Prosthetic Problems and possible solutions in Setting –up of teeth for skeletal Class I, II and Class III arch relationship of completely edentulous patients.
7- Try-in of the wax trial complete denture.
8- Complete denture insertion (Delivery)
9- Occlusal corrections.
10- Managements of Post Insertion Problems and Complaints.
11- Single denture and Kelly's Syndrome
12- Denture Processing and Laboratory Errors.
13- Relining, rebasing and repair of removable dentures
14- Denture Processing and Laboratory Errors.pptxAmalKaddah1
COMPLETE DENTURE CONSTRUCTION
1- Diagnosis and Treatment Planning for Removable Prosthodontics
2- Preliminary Maxillary and mandibular impression procedures
3- Final Maxillary and mandibular impression procedures
4- Jaw Relation Registration
a. Introduction and the stomatognathic system
What 'occlusion' is and why it is important
b. Definitions.
c. Check denture foundation and Establishment of facial contour.
d. Establishment of the occlusal plane.
e. Importance of mounting the maxillary cast using Maxillary face-bow record and transfer.
f. Determination of vertical dimension of centric occluding relation.
g. Determination of centric and eccentric relations at the accepted vertical dimension.
5- Selection of Artificial Teeth
6- Prosthetic Problems and possible solutions in Setting –up of teeth for skeletal Class I, II and Class III arch relationship of completely edentulous patients.
7- Try-in of the wax trial complete denture.
8- Complete denture insertion (Delivery)
9- Occlusal corrections.
10- Managements of Post Insertion Problems and Complaints.
11- Single denture and Kelly's Syndrome
12- Denture Processing and Laboratory Errors.
13- Relining, rebasing and repair of removable dentures
14- Denture Processing and Laboratory Errors
13- Relining, rebasing and repair of removable dentures.pptxAmalKaddah1
COMPLETE DENTURE CONSTRUCTION
1- Diagnosis and Treatment Planning for Removable Prosthodontics
2- Preliminary Maxillary and mandibular impression procedures
3- Final Maxillary and mandibular impression procedures
4- Jaw Relation Registration
a. Introduction and the stomatognathic system
What 'occlusion' is and why it is important
b. Definitions.
c. Check denture foundation and Establishment of facial contour.
d. Establishment of the occlusal plane.
e. Importance of mounting the maxillary cast using Maxillary face-bow record and transfer.
f. Determination of vertical dimension of centric occluding relation.
g. Determination of centric and eccentric relations at the accepted vertical dimension.
5- Selection of Artificial Teeth
6- Prosthetic Problems and possible solutions in Setting –up of teeth for skeletal Class I, II and Class III arch relationship of completely edentulous patients.
7- Try-in of the wax trial complete denture.
8- Complete denture insertion (Delivery)
9- Occlusal corrections.
10- Managements of Post Insertion Problems and Complaints.
11- Single denture and Kelly's Syndrome
12- Denture Processing and Laboratory Errors.
13- Relining, rebasing and repair of removable dentures
9- Denture Placement and occlusion correction.pptxAmalKaddah1
COMPLETE DENTURE CONSTRUCTION
1- Diagnosis and Treatment Planning for Removable Prosthodontics
2- Preliminary Maxillary and mandibular impression procedures
3- Final Maxillary and mandibular impression procedures
4- Jaw Relation Registration
a. Introduction and the stomatognathic system
What 'occlusion' is and why it is important
b. Definitions.
c. Check denture foundation and Establishment of facial contour.
d. Establishment of the occlusal plane.
e. Importance of mounting the maxillary cast using Maxillary face-bow record and transfer.
f. Determination of vertical dimension of centric occluding relation.
g. Determination of centric and eccentric relations at the accepted vertical dimension.
5- Selection of Artificial Teeth
6- Prosthetic Problems and possible solutions in Setting –up of teeth for skeletal Class II and Class III arch relationship of completely edentulous patients.
7- Try-in of the wax trial complete denture.
8- Complete denture insertion (Delivery)
9- Occlusal corrections.
10- Managements of Post Insertion Problems and Complaints.
11- Single denture and Kelly's Syndrome
12- Denture Processing and Laboratory Errors.
00- Revision of occlusion 5th year.pptxAmalKaddah1
The Stomatognathic system
Definitions.
Difference between natural and artificial Occ.
Balanced Occlusion and Factors affecting Balanced O.
Concepts of occlusion (Balanced and Non-balanced Occlusion).
Revision of Complete Denture Occlusion 5th yearAmalKaddah1
Revisions of
Definitions
Differences between natural and artificial dentition
Types of artificial tooth forms
Types of balance
Factors affecting balanced occlusion
Concepts of occlusion
6- Prosthetic problems and possible solutions in setting –up of teeth for ske...AmalKaddah1
Edited
Prosthetic Problems and possible solutions in Setting–up
of teeth for skeletal Class I, II and Class III arch relationship
For completely edentulous patients
I-Introduction
II-Factors affecting teeth arrangement
1. Pattern of bone resorption
2. Esthetics and phonetics requirements.
3. Stability
4. Occlusal plane
5. Arch form ( Arrangement of teeth in harmony with ridge contour)
6. Interdigitation of the teeth
7. The inclination for proper occlusion
8. Arch relationship
III- Guidelines governing the position of artificial teeth
IV- Arrangement of teeth in normal cases.
V - Atypical arrangement of teeth (Class II, Class II)
VI- Common errors in teeth setting.
VII- Occlusal Schemes- Attempts to Stabilize Dentures (Lingualized and Monoplane occlusion).
4- Revision >> Concepts of occlusion for 4th year Students.AmalKaddah1
Occlusion for Removable Prosthodontics.
Revision:
What 'occlusion' is and why it is important
Definitions.
Difference between natural and artificial Occlusion.
Types of artificial posterior teeth
Problems with anatomic and non-anatomic teeth
Factors affecting selection of tooth forms.
Rational for Arranging Posterior Teeth in Balanced Occlusion
Contraindications of balanced occlusion.
Types of Balance as Related to Complete Denture
- Lever balance
-Occlusal Balance.
Balanced Occlusion and Factors affecting Balanced Occ. (Third year)
Concepts of occlusion (Balanced and Non balanced Occlusion).
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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.
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.
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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.
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?
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It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
How libraries can support authors with open access requirements for UKRI fund...
Complete Denture 4- Maxillo-mandibular Relation Records d- Centric Relation Registration
1.
2.
3. Dr. Amal Fathy Kaddah
Professor of Prosthodontic,
Faculty of Dentistry
Cairo University
4. When you realize you've made a mistake,
take immediate steps to correct it.
5. RECORDING JAW RELATIONSHIPS
1. Check denture foundation.
2. Establish facial contour.
3. Establish occlusal plane.
4. Maxillary face-bow record.
5. Determination of vertical dimension of centric
occluding relation.
6. Determine centric relation at the accepted vertical
dimension.
7. Locking device ( Recording the C.O.R.)
6. 1. Orientation relations
2. Vertical relation, and
3. Antero - posterior relation
Three - dimensional record
Boucher classified jaw relations into three groups
7. 1- ORIENTATION RELATIONS
• Orientation of maxilla in relation to base of skull
and the hinge axis
The axis can be located by the facebow.
2- Vertical relation
• Orientation of occlusal plane
8. Orientation of occlusal plane
and the Vertical relation
• Help in achieving esthetic, phonetics and
mastication.
• Affect stability of complete denture &
ultimately result in alveolar bone resorption if
not properly achieved.
14. III- Determination of occlusal plane
3- Physics and mechanics (leverage action
and parallelism)
Regarding:
1- Aesthetic appearance
of the teeth
2- Function (chewing and
speech)
25. 2. CRITICAL! Check that record base
heels/rims do not touch
Eliminate contact with record bases
26. 3- Equalize pressure of occluding
forces
Maintain even contact between the upper and
lower occlusion blocks without displacement of
denture supporting tissues,
at the predetermined
vertical dimension of
centric occluding
relation.
27. 4. Remove 2 mm. of wax from the
lower occlusion block. Replace them
by 4 mm. softened wax.
28. 5. Evenly soften the wax by tapping it
with the edge of a heated wax spatula.
29. 6- Both rims should be inserted into the
mouth and Stabilized using index fingers
on the flange and the thumb under the
symphysis to held it firmly in place
30. 7- Guiding the mandible into centric position
a. Index fingers on the rim, thumbs under
symphysis
31. Centric Relation Registering
b. Jiggle the mandible to freely arc
c. Allow the patient to close into contact
d. Ask the patient to
bite or close on
your fingers
posteriorly to close
the rims together
32. – Do NOT push the mandible or
dislodge the record base
– Medium must be dead soft
– Minimal closing pressure
(Yurkstas and Kapur)
Centric Relation Registering
33. e- Let the patient occlude lightly in
centric and displace 2 mm from the
soft wax
8- The vertical dimension is re-checked.
34. Check Bite Method
9. Mark the Central line and canine lines
extending from upper rim to lower rim
in centric relation position
35. Check Bite Method
10- Remove occlusion blocks together, Rinse.
A sharp imprint of the V-shaped notches should be
recognize.
11. Remove all displaced wax outside the occlusal
surface of the lower block. It may act as inclined
planes, Rinse.
Registration Should be
Sharp, Not Rounded
Keep Wax Neat
36. 12- Return occlusion blocks to the mouth to check
correctness of centric occluding relation record.
The midline of the mouth should be rechecked and
scored with a knife on the occlusion rim
Recheck the registration repeatedly
37. 13. Assemble the two occlusion blocks together
outside patient’s mouth according to the
locking projections. The trial denture bases
should not be touched posteriorly, Rinse.
39. Methods to guide the mandible
in centric relation
1- Patient in a Slightly Supine position.
2- Tongue retrusion.
3- Swallowing.
4- Biting operator’s fingers.
5- Relaxation.
6. Fatigue X
7- The temporalis muscle check X
40. Guiding the patient to close in centric relation is done by saying to the
patient, "Close on your back teeth". If the thumb is not placed
against the chin, most patients will close anteriorly to the centric
occlusal position. However, strong pressure should not be used on the
chin, otherwise the jaw will protrude
1- Chin push guidance (CPG) (Kabnacell 1964)
Thumb at the menton
41. Guiding the patient to close in centric relation is done
by asking the patient to touch a wax knob placed on
the posterior border of the maxillary base in the
midline by the tip of his tongue (tongue retrusion).
Knob for tongue retrusion
2- Tongue retrusion
Thumb at the menton
Helkimo et al 1973
42. 3- Using index and thumb fingers of the left hand to
stabilize the upper flange and the index fingers of
the right hand to stabilize the lower flange and the
thumb under the symphysis to held it firmly in place
43. 4- Bimanual guidance or manipulation
Using index fingers on the flange and the thumbs
under the symphysis to held it firmly in place
44. 5- Ramus assisted chin point guidance
Simon and Nicholls (1980)
Thumb at the chin (posterior pressure) while index and
second finger on the lower border (upward pressure)
45. Take Care during Making the Record
1. Ensure wax is dead soft
2. Ensure smooth arc of closure, no horizontal
deviations ( e.g. due to pain)
Have patient close into record correctly
3. Use index fingers and thumb to stabilize the
record bases.
4. Do NOT push the mandible or dislodge the
record base
46. 5. Patient opens, relaxes, and slowly closes
(Jiggle the mandible)
• Gently arc the mandible in a hinge-like motion
• Operator uses tactile senses to ensure the
mandible does not translate
Take Care during Making the Record
47. 6. Never instruct the patient to bite
firmly nor quickly >>
Causes translation or inaccuracy in
the record.
Take Care during Making the Record
48. 7. Ask patient to stop as soon as you asked
him to stop (the correct position has been
reached)
Some may not be able to tell when wax
records contact.
8. The trial denture bases should not be
touched posteriorly
Take Care during Making the Record
50. 1. The articulator still locked in centric, the incisal pin should be flush with
the upper member of articulator and the upper mounting being properly
secured in place.
2. Seal upper and lower occlusion rims in the proper relation before attaching
the lower cast to the mounting ring with plaster.
3. Invert the articulator and place the lower occlusion rim to be properly
related to the upper according to indices taken from the patient’s mouth.
4. Both occlusion blocks are properly seated on their casts without
interference or hitting of the rears, Apply plaster on the lower cast and
close the upper member upon it.
5. Trim the mounting neatly and wash all plaster off the articulator, never
present a dirty articulator or rough untidy mounting.