Techniques of the direct composite restoration. Includes different instruments, matrix system, wedges, bevel, etching, bonding, and placement of composite along with finishing and polishing and clinical management
An inlay may cap none, or may cap all but one cusp.
Sturdevant’s 4th ed. page579
Inlays may be used as single-tooth restorations for proximo-occlusal or gingival lesions with minimal to moderate extensions
Shillingburg page 1
An inlay may be defined as a restoration which has been constructed out of mouth from gold, porcelain, or other material & then cemented into the prepared cavity of a tooth.
William McGehee pg410
Bevels and flares are very important components of resin restoration procedure. This presentation focuses on bevels and flares in restorative procedure.
The cast metal restoration is versatile and is especially applicable to Class II onlay preparations. The process has many steps, involves many dental materials, and requires meticulous attention to prepration.
Tooth treatment planned to be restored with an intracoronal restoration, but the decay or fracture is so extensive that a direct restoration, such as amalgam or composite, would not be able to sustain or bear forces.
Additionally, when decay or fracture incorporate areas of cusp or remaining tooth structure that undermines perimeter walls of a tooth, an onlay might be indicated.
An inlay may cap none, or may cap all but one cusp.
Sturdevant’s 4th ed. page579
Inlays may be used as single-tooth restorations for proximo-occlusal or gingival lesions with minimal to moderate extensions
Shillingburg page 1
An inlay may be defined as a restoration which has been constructed out of mouth from gold, porcelain, or other material & then cemented into the prepared cavity of a tooth.
William McGehee pg410
Bevels and flares are very important components of resin restoration procedure. This presentation focuses on bevels and flares in restorative procedure.
The cast metal restoration is versatile and is especially applicable to Class II onlay preparations. The process has many steps, involves many dental materials, and requires meticulous attention to prepration.
Tooth treatment planned to be restored with an intracoronal restoration, but the decay or fracture is so extensive that a direct restoration, such as amalgam or composite, would not be able to sustain or bear forces.
Additionally, when decay or fracture incorporate areas of cusp or remaining tooth structure that undermines perimeter walls of a tooth, an onlay might be indicated.
IMPRESSION TECHNIQUES IN COMPLETE DENTURE
CONTENTS
Introduction
History
Basic requirements of impression making
Objectives of impression making
Theories in impression making
Recording the preliminary impressions
Spacer designs & tissue stops
Recording the final impressions
Border molding
Wash impression
Conclusion
References
INTRODUCTION
The journey towards successful complete denture fabrication begins with making accurate impressions.
All subsequent steps that are necessary for complete denture fabrication will be greatly diminished if the denture base does not fit due to inadequate impression.
DEFINITION
IMPRESSION:
An imprint or negative likeness of the teeth, of the edentulous areas where the teeth have been removed, or of both, made in a plastic material that becomes relatively hard or set while in contact with these tissues.
WINKLER
COMPLETE DENTURE IMPRESSION:
A negative registration of the entire denture bearing, stabilizing, and border seal areas present in the edentulous mouth.
HEARTWELL
HISTORY
Before the middle of the 18th century, no method was available for producing an impression of the alveolar ridge.
Ridges were painted with a dye and a block of ivory or bone was pressed on the ridge.
Areas of contacts were scraped away from the block until the best fit of the prosthesis was achieved.
In 1711, Mathian Gottfried Purman recorded the use of wax.
In 1728, Pierre Fauchard made dentures by measuring mouth with compasses and cut the bone to approximate shape for the space to be filled.
In 1736, Phillip Pfaff of Germany made impressions in wax sections of half of the mouth at a time.
1782 -William Rae said that “he got the measurement of the jaws in a piece of wax pushed into the gum, afterwards making a cast of it with plaster of paris.
1840 - Charles De loude (london) made one of the earliest reference to impression trays .
1842- Montgomery discovered gutta percha.
It was introduced as an impression material in 1848 by Colburn.
1844-Wescott, Dwinelle and Dunning used plaster of paris as an impression material.
1862 Franklin described the first correct impression.
1874 Modeling plastics was developed by S. S. White
1900 Green brothers introduced a method for manipulating the modeling plastics.
First to use the term "posterior dam" in describing the posterior palatal seal.
1915 Rupert Hall perfected the first moderate-heat modeling plastic for making individual impression trays.
1925 Poller used agar for dental impressions.
1930s Ward and Kelly used ZOE for impressions.
1939 Trapozzano described one of the early techniques using Zinc oxide eugenol paste.
1936 Alginate-type materials patent awarded.
1940s Write and Denen were first to use alginate impression for corrective wash procedures
1942- Pendleton suggested a fluid wax technique using asiatic or india
IMPRESSION TECHNIQUES IN COMPLETE DENTURE
CONTENTS
Introduction
History
Basic requirements of impression making
Objectives of impression making
Theories in impression making
Recording the preliminary impressions
Spacer designs & tissue stops
Recording the final impressions
Border molding
Wash impression
Conclusion
References
INTRODUCTION
The journey towards successful complete denture fabrication begins with making accurate impressions.
All subsequent steps that are necessary for complete denture fabrication will be greatly diminished if the denture base does not fit due to inadequate impression.
DEFINITION
IMPRESSION:
An imprint or negative likeness of the teeth, of the edentulous areas where the teeth have been removed, or of both, made in a plastic material that becomes relatively hard or set while in contact with these tissues.
WINKLER
COMPLETE DENTURE IMPRESSION:
A negative registration of the entire denture bearing, stabilizing, and border seal areas present in the edentulous mouth.
HEARTWELL
HISTORY
Before the middle of the 18th century, no method was available for producing an impression of the alveolar ridge.
Ridges were painted with a dye and a block of ivory or bone was pressed on the ridge.
Areas of contacts were scraped away from the block until the best fit of the prosthesis was achieved.
In 1711, Mathian Gottfried Purman recorded the use of wax.
In 1728, Pierre Fauchard made dentures by measuring mouth with compasses and cut the bone to approximate shape for the space to be filled.
In 1736, Phillip Pfaff of Germany made impressions in wax sections of half of the mouth at a time.
1782 -William Rae said that “he got the measurement of the jaws in a piece of wax pushed into the gum, afterwards making a cast of it with plaster of paris.
1840 - Charles De loude (london) made one of the earliest reference to impression trays .
1842- Montgomery discovered gutta percha.
It was introduced as an impression material in 1848 by Colburn.
1844-Wescott, Dwinelle and Dunning used plaster of paris as an impression material.
1862 Franklin described the first correct impression.
1874 Modeling plastics was developed by S. S. White
1900 Green brothers introduced a method for manipulating the modeling plastics.
First to use the term "posterior dam" in describing the posterior palatal seal.
1915 Rupert Hall perfected the first moderate-heat modeling plastic for making individual impression trays.
1925 Poller used agar for dental impressions.
1930s Ward and Kelly used ZOE for impressions.
1939 Trapozzano described one of the early techniques using Zinc oxide eugenol paste.
1936 Alginate-type materials patent awarded.
1940s Write and Denen were first to use alginate impression for corrective wash procedures
1942- Pendleton suggested a fluid wax technique using asiatic or india
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.
Journal club: Lidocaine and Sodium hypochlorite interactionMrinaliniDr
In vitro assessment of the interaction between lidocaine hydrochloride and sodium hypochlorite on root canal dentin before and after chemomechanical instrumentation procedures
David H Pashley: Clinical considerations of microleakageMrinaliniDr
Microleakage and its effect. Includes factors affecting microleakage, the role of smear layer, cytotoxicity of dental materials, blood flow, lymphatics in pulp
Internal anatomy of pulp space. Includes history, development of pulp, classification of the root canal, isthmus, root canal ramifications, regressive changes, apical root anatomy, variations in pulpal anatomy, methods of determining anatomy, pulp space anatomy of permanent teeth.
Management of biofilm in endodontics. History, Classification, use of sodium hypochlorite, EDTA, Chlorhexidine, recent irrigants, LASERS, Ultrasonics, Natural agents, Nanoparticles and probiotics
Hand instruments in operative dentistryMrinaliniDr
Hand instruments in operative dentistry. Includes definition, history, classification, instrument design, instrument formula, parts, nomenclature, grasps, rests and guards, sharpening of instruments and recent advances
Includes definition, classification, history, formation, salient features, gene transfer( conjugation, transformation, transduction), antibiotic resistance, nutritional influence, quorum sensing, role in pathogenesis, and controversies.
The simplified electron and muon model, Oscillating Spacetime: The Foundation...RitikBhardwaj56
Discover the Simplified Electron and Muon Model: A New Wave-Based Approach to Understanding Particles delves into a groundbreaking theory that presents electrons and muons as rotating soliton waves within oscillating spacetime. Geared towards students, researchers, and science buffs, this book breaks down complex ideas into simple explanations. It covers topics such as electron waves, temporal dynamics, and the implications of this model on particle physics. With clear illustrations and easy-to-follow explanations, readers will gain a new outlook on the universe's fundamental nature.
How to Build a Module in Odoo 17 Using the Scaffold MethodCeline George
Odoo provides an option for creating a module by using a single line command. By using this command the user can make a whole structure of a module. It is very easy for a beginner to make a module. There is no need to make each file manually. This slide will show how to create a module using the scaffold method.
Strategies for Effective Upskilling is a presentation by Chinwendu Peace in a Your Skill Boost Masterclass organisation by the Excellence Foundation for South Sudan on 08th and 09th June 2024 from 1 PM to 3 PM on each day.
বাংলাদেশের অর্থনৈতিক সমীক্ষা ২০২৪ [Bangladesh Economic Review 2024 Bangla.pdf] কম্পিউটার , ট্যাব ও স্মার্ট ফোন ভার্সন সহ সম্পূর্ণ বাংলা ই-বুক বা pdf বই " সুচিপত্র ...বুকমার্ক মেনু 🔖 ও হাইপার লিংক মেনু 📝👆 যুক্ত ..
আমাদের সবার জন্য খুব খুব গুরুত্বপূর্ণ একটি বই ..বিসিএস, ব্যাংক, ইউনিভার্সিটি ভর্তি ও যে কোন প্রতিযোগিতা মূলক পরীক্ষার জন্য এর খুব ইম্পরট্যান্ট একটি বিষয় ...তাছাড়া বাংলাদেশের সাম্প্রতিক যে কোন ডাটা বা তথ্য এই বইতে পাবেন ...
তাই একজন নাগরিক হিসাবে এই তথ্য গুলো আপনার জানা প্রয়োজন ...।
বিসিএস ও ব্যাংক এর লিখিত পরীক্ষা ...+এছাড়া মাধ্যমিক ও উচ্চমাধ্যমিকের স্টুডেন্টদের জন্য অনেক কাজে আসবে ...
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
Executive Directors Chat Leveraging AI for Diversity, Equity, and InclusionTechSoup
Let’s explore the intersection of technology and equity in the final session of our DEI series. Discover how AI tools, like ChatGPT, can be used to support and enhance your nonprofit's DEI initiatives. Participants will gain insights into practical AI applications and get tips for leveraging technology to advance their DEI goals.
A review of the growth of the Israel Genealogy Research Association Database Collection for the last 12 months. Our collection is now passed the 3 million mark and still growing. See which archives have contributed the most. See the different types of records we have, and which years have had records added. You can also see what we have for the future.
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
This presentation includes basic of PCOS their pathology and treatment and also Ayurveda correlation of PCOS and Ayurvedic line of treatment mentioned in classics.
How to Add Chatter in the odoo 17 ERP ModuleCeline George
In Odoo, the chatter is like a chat tool that helps you work together on records. You can leave notes and track things, making it easier to talk with your team and partners. Inside chatter, all communication history, activity, and changes will be displayed.
4. 1 Goldstein Flexi-Thin
Composite Instrument
Small universal style with
rounded plugger tip and a
narrow paddle for initial
placement and contouring of
Class I, II, and III restorations
5. “
5
MODIFICATIONS
Mini 1 Goldstein Flexi-Thin
Composite Instrument
CIGFTMIN16
Mini version of the CIGFT1 for
small pits and fissures, tunnel
preparations or minor tooth
defects on lower anteriors.
6. 6
Flexible, reversed, flared paddle
design for shaping and placement
of Class III and IV and V
restorations.The thinness of the
paddles allow for easier
subgingival margin finishing.
7. ▸ Medium Placing/Condensing
XTS® Composite Instrument
For small pits and fissures, as well
as placement and condensing
with limited access.
11. 11
Application of opaques and tints, bonding adhesive, and for cement removal prior to
polymerization.
Fine brush (#1) for fine detailing, (#2) and (#3) brushes for the rest of the restorative
dental needs.
15. 15
MATRIX SYSTEM FOR ANTERIOR
TEETH
15
BURTON BANDS UNICA ANTERIORS BLUE VIEW VARISTRIP
CONTOUR
BLUE VIEW CERVICAL
MATRIX
SECTIONAL TRANSPARENT
MATRIX(KERR)
16. BEVELLING
▸ STARBURST BEVEL
16
Initial 45° bevel, marked in
blue and then feather the
finish line out in an irregular
pattern to help blend in final
restoration
17. CONDITIONING AND ETCHING
Etching:
demineralisati
on of
superficial
calcium ions
Conditioning:
removal of
organic layer
making the
surface more
reactive
Less
concentration,
less time:
conditioning
More conc.
More time:
etching
17
18. BONDING
▸ 5TH GENERATION(Mid
1990s)
▸ Two step
▸ Etching
▸ Priming+Bonding
▸ Eg. Opti Bond Solo(Kerr),
Single Bond(3M)
▸ Disadvantages: Solution must
be refreshed continuously,
Post operative sensitivity
18
▸ 6TH GENERATION(Early
2000s)
▸ “self-etching primers
▸ Two step: Acidic primer followed
by adhesive
▸ One step: One drop from each
bottle mixed outside and applied
▸ Disadvantage: Bond to enamel
is less as pH of acidic primer not
enough to properly etch enamel
▸ Eg.Nano Bond, Optibond, Xeno
III
21. HORIZONTAL LAYERING TECHNIQUE:
•Layer: Less than 2mm thickness
•Increases C factor, thereby increases shrinkage stress on opposing
wall
INCREMENTAL TECHNIQUES
22. OBLIQUE LAYERING TECHNIQUE
•Series of wedge-shaped composite increments.
•Each increment: photocured twice, first through the cavity walls &
from the occlusal surface.
•Reduces the C-factor and prevents the distortion of cavity walls.
23. VERTICAL LAYERING TECHNIQUE
•Small increments in vertical pattern starting from one wall, i.e.,
buccal or lingual and carried to another wall.
•Start polymerization from behind the wall, i.e., if buccal increment is
placed on the lingual wall, it is cured from outside of the lingual wall.
•Reduces gap at gingival wall which is formed due to polymerization
shrinkage, hence postoperative sensitivity and secondary caries
24. CENTRIPETAL BUILDUP TECHNIQUE
•Employs thin metal matrix bands and wooden wedges which
provide firm contact areas and anatomical proximal contours .
•Recent studies do not indicate any detriment of metal matrix bands
in cervical gap formation.
25. ▸ If gap develops, the next consecutive layer which is condensed
toward the gingival floor is likely to fill gap since the
continuity of space created is not occluded.
▸ Not time-consuming and easy to implement.
▸ Once peripheral composite envelope is created, the cavity is
managed as a simple Class I cavity.
▸ The systemic use of enamel and dentin shades achieves
predictable and pleasing esthetic results.
▸ Indication: small to medium posterior restoration.
27. ▸ Individual cusps are restored one at a time up to the level of
the occlusal enamel.
▸ Small sloping increments are applied to each corner of the
cavity.
▸ Manipulation is kept to a minimum, to avoid folding voids
into the material.
▸ Initially time-consuming but greatly reduce finishing time by
precise attention to progressive reconstruction of natural
morphology
29. ▸ Use of a clear matrix and reflective wedges.
▸ First, the curing light is directed through the matrix and wedges
in the attempt to guide the polymerization vectors toward the
gingival margin thus preventing any gap formation.
▸ Then, wedge-shaped composite increments are placed to
further inhibit distortion of cavity walls and reduce the C-
factor.
▸ This technique is associated with polymerization first through
the cavity walls and then from the occlusal surface in order to
direct the vectors of polymerization toward the adhesive
surface.
30. POLYCHROMATIC LAYERING TECHNIQUE
▸ When esthetic demands are high, the widely accepted stratification
technique proposed by Lorenzo Vanini is recommended.
▸ Fundamental principle: use different composite shades to replicate
the layers seen in natural teeth which can be described in layers as
palatal enamel layer, dentine layer, special features, opalescent,
characterizations, and intensives.
51. ▸ Finishing diamond burs have also been used for finishing
with light water spray
▸ ET Diamonds
▸ T & F Hybrid points(Shofu)
▸ Two striper diamonds(Premier)
51
52. FINISHING DISCS
▸ More precision and safety
▸ Most discs uses abrasive agent like aluminium oxide or
silicon carbide
▸ Refinement of incisal embrasure
▸ Adjust incisal length
▸ Smoothen the junction of composite and tooth
52
FLEXIDISC MINI AND
FLEXIDISC(COSMODENT)
SUPERSNAP(SHOFU)
53. FINISHING STRIPS
▸ Sof-Flex finishing and polishing strips: 2mm and 4 mm widths.
▸ Flexistrip(Cosmodent):Ultrathin version, more flexible,easily
pass through contacts
▸ Epitex(GC): By far the thinnest strip(0.05mm)
▸ Others: Super snap polystrip(shofu), Finishing strip(Bisco):
Least expensive 53
54. POLISHING INSTRUMENTS
▸ ASTROPOL(IVOCLAR VIVADENT): 4 shapes;
cup, small point, large point, discs
▸ PoGo(Dentsply): cup,disc and a point,
very light pressure and polishing in one direction
▸ D Fine diamond polishers for hybrid composites:SS
Semi flexible rubber instruments with
Diamond and D fine double diamond
produces highest shine comparable to
astropol
54
55. BRUSHES
▸ Jiffy brush(Ultradent): Lowest shine intraorally
▸ ComposiPro brushes(Brassler): similar to jiffy brushes in
design but more effective
▸ Groovy
55
POLISHING PASTES
PRISMA GLOSS(DENTSPLY): Most effective
SPARKLE(PULPDENT): Remarkable gloss, tendency
to dry out
DIAMOND POLISH(ULTRADENT)
ENAMELISE(COSMODENT)
66. REFERENCES
▸ Spiller MS. Dental Composites: A Comprehensive Review. Albany,
NY. 2012 Oct;12212.
▸ Ahmad MZ, Gaikwad RN, Arjumand B. Comparison of two different
matrix band systems in restoring two surface cavities in posterior
teeth done by senior undergraduate students at Qassim University,
Saudi Arabia: A randomized controlled clinical trial. Indian Journal
of Dental Research. 2018 Jul 1;29(4):459.
▸ Loomans BA, Opdam NJ, Roeters FJ, Bronkhorst EM, Burgersdijk
RC. Comparison of proximal contacts of Class II resin composite
restorations in vitro. Operative dentistry. 2006 Nov;31(6):688-93.
▸ LeSage BP. Aesthetic anterior composite restorations: a guide to
direct placement. Dental Clinics of North America. 2007 Apr
1;51(2):359-78.
▸ Erickson RL, Barkmeier WW, Latta MA. The role of etching in
bonding to enamel: a comparison of self-etching and etch-and-rinse
adhesive systems. Dental materials. 2009 Nov 1;25(11):1459-67.
66
67. ▸ Benetti AR, Havndrup-Pedersen C, Honoré D, Pedersen MK,
Pallesen U. Bulk-fill resin composites: polymerization contraction,
depth of cure, and gap formation. Operative dentistry. 2015
Mar;40(2):190-200.
▸ Chandrasekhar V, Rudrapati L, Badami V, Tummala M. Incremental
techniques in direct composite restoration. Journal of conservative
dentistry: JCD. 2017 Nov;20(6):386.
▸ Ashok NG, Jayalakshmi S. Factors that influence the color stability of
composite restorations. International Journal of Orofacial Biology.
2017 Jan 1;1(1):1.
▸ Türkün LS. New trends in polishing direct resin composites. Practical
procedures & aesthetic dentistry: PPAD. 2004 Sep;16(8):589.
▸ Wahbi MA, Al Sharief HS, Tayeb H, Bokhari A. Minimally invasive
use of coloured composite resin in aesthetic restoration of
periodontially involved teeth: Case report. The Saudi dental journal.
2013 Apr 1;25(2):83-9.
67
Exclusive Aluminum Titanium Nitride Coating (AlTiN)
Creates an extremely hard, smooth surface that resists scratches and sticking. Exclusive Aluminum Titanium Nitride Coating (AlTiN)
Chisel, pointed tip, ball
To remove excess, for contouring
Sabre wedge: 25 dollar, tranlucent, Luciwedges:3049 for 100, flexiwedges:25 dollar, flexi wedges: 32 dollar
Sabre wedge: 25 dollar, tranlucent, Luciwedges:3049 for 100, flexiwedges:25 dollar, flexi wedges: 32 dollar
Wave wedge: sealing capability at gingival margin is better, design accomodates gngival tissue, concavity: less traumatic
Flexi wedge: do not stay in place, expensive
Wedge wands: difficult to remove wand from wedges
Sabre wedge: less traumatic
The esthetic use of a bevel when placing composite restorations is to create a gradual transition between all tooth structure and all resin. Between the two, we have decreasing amounts of tooth overlaid by increasing amounts of resin. The bevel creates a transition zone where the light characteristics of the two materials are blended in an attempt to “fool” our visual perception. These same concepts are why butt joint porcelain margins are less esthetic than when we drop a shoulder or a labial veneer on our onlay preps. When I saw the “starBurst” Bevel for the first time I knew it made brilliant sense because of the randomness of the depth and width of the bevel. The pattern of varying the two layers of resin and tooth creates so much visual blending from our brain that the margin simply vanishes
Enamel: adsorbed proteind that originate from saliva, smear layer- reduces surface energy
Etched enamel: high surface energy, prone to contamination
ETCHING: 15 SEC 30 TO 40% PHOSPHORIC ACID, but fluorosed teeth resistant to acid: 60 second, primary teeth: enamel is more aprismatic so more etching time
More than 50% acid: monocalcium phosphate monohydrate-prevents further dissolution
Below 30%; DCPD that cannot be easily removed
7th gen: no mixing, addition of desensitizing agent
to direct the vectors of polymerization toward the adhesive surface
Finishing: rough to refined form
Polishing: Shiny surface
Diamonds can cut tooth by error but long lasting, light pressure, cut faster
Carbide: resist clogging,Tends to dull faster
Flexidisc: Cheaper than soflex, more shine than soflex
Supersnap: Protected mandrel so no chancd of damaging restoration and effective
Sof-Flex: Gray: finishing and blue for polishing, relatively expensive
Thin strip: no stripping while insertion
IVCLAR VIVADENT: HIGHEST GLOSS ACC TO STUDIES, finishers wears out easily polishers are durable
POLISHING PASTES: APPLIED WITH CUPS DISCS BRUSHES ETC