Amalgam restorations performed better than did composite restorations. Using the information from remake request slips in a dental schools predoctoral clinic, we examined the shortterm survival of class ii resin composite restorations versus class ii dental amalgam restorations. The primary function of the matrix is to restore anatomic proximal contours and contact areas. Operative dentistry principles of cavity preparation for amalgam. Class i and class ii silver amalgam and resin composite. Page 3 of 11 bds final professional examination 2007 operative dentistry mcqs model paper 09. It also presents information about any differences in these classes of restorations when a glass ionomer type of material is used for the restoration. Class 5 amalgam preparation and restoration quizlet. The large amalgam restoration was removed, and secondary decay noted. Once the existing amalgam and decay were removed, the remaining tooth structure indicated a very large, very challenging class ii restoration was required. The patient has been anesthetized with one carpule of 2% xylocaine with 1. Dental clinicians have an expanding range of biomaterial choices for restoring tooth structure. Amalgam matrix for class ii and class v preparations. The treatment was completed using a combination of solea and a highspeed handpiece, all without anesthesia.
In addition, the preparation for an amalgam restoration typically requires 90degree cavosurface margins and specific axial depths that allow incorporation of secondary retentive features. The proposed restoration will be wide, replace a functional cusp or extend onto the anatomic root. Class ii silver amalgam preparations will vary with the morphology, anatomy and extent of carious involvement of the individual tooth being. This restoration shows an old amalgam that needs to be replaced with composite. Of the two types of aforementioned cavities class ii was found to be the most commonly failed restoration, which accounts for 66. Curriculum time compared to clinical procedures in amalgam. This fiveyear prospective clinical trial evaluated amalgam restorations with localized defects that were treated by means of repair or refurbishing. Haya alwaalan najla alkhuzaim ghaida almashaan maha alhamdan 2.
Then place your cavity liner into the preparation before placement of a microhybrid or nanofill dental composite so you can clearly identify the composite on an xray. Contact area carious lesion proximal view vertical section buccal view. A first analysis revealed a class iii carious lesion on incisor 21. After the amalgam is removed, the tooth is prepped. Then the technique walks you through the placement of the substructure of the tooth with either a microhybrid or nanofill dental composite. Class 5 amalgam preparation and restoration flashcards. Class iii and v amalgam restorations pocket dentistry.
Class ii amalgam restoration instructions by dr ywom duration. Posterior class vi adhesive tooth repair inside dentistry. Start studying class 5 amalgam preparation and restoration. This technique sequence showcases a class iii composite restoration. The primary disadvantage of class iii and v amalgam restorations is that they are metallic and unesthetic. Start studying assisting for class 1 amalgam restoration. Evidencebased guidelines for planning and placing direct class ii. The quality of routine class ii cavity preparations for amalgam.
Hi guys, i am sharing bds lecture notes on amalgam restoration in pdf format. Amalgam amalgam is an alloy in which mercury occurs as a main component. The occlusal contacts are located predominately on surfaces that will be occupied by the restoration, with little or no contact on tooth structure. Amalgam restoration an overview sciencedirect topics. Repair of posterior teeth with class vi defects resulting from caries, erosion, or wear has been accomplished with gold foil, silver amalgam, and resinbased composite. The class iii restoration is nominally a onesurface restoration on the proximal contacting surface of the tooth. Jun 29, 20 to evaluate the effects of 3 t magnetic field on microleakage of amalgam restorations containing three different types of silver ag. Today, the decreased number of amalgam fillings is also influenced by a high demand for toothcolored and biocompatible restorations 1. To evaluate the effects of 3 t magnetic field on microleakage of amalgam restorations containing three different types of silver ag. Evidencebased guidelines for planning and placing direct. Fiftytwo patients 50% female and 50% male, mean age 28. Failures of amalgam restorations fracture of the isthmus of a class ii due to insufficient bulk of amalgam marginal failure in proximal box area due to excessive flare of the cavosurface margin recurrent caries failure to extend preparation adequately 17.
The objective of the tooth preparation is to remove as little tooth. Amalgam restorations and future perspectives longdom. Survival and reasons for failure of amalgam versus composite. Jan 28, 20 this fiveyear prospective clinical trial evaluated amalgam restorations with localized defects that were treated by means of repair or refurbishing.
The modified class iv preparation for composite is indicated for small or moderate class iv lesions or traumatic defects. Class v tooth preparation for amalgam restorations slideshare. Chiodera class iii restoration unica anterior polydentia. This chapter presents information about class iii, iv, and v direct composite restorations. Class iii, iv, and v direct composite and glass ionomer. Early failure of class ii resin composite versus class ii.
Class iii amalgam restorations are usually prepared on. The fracture and secondary caries are widespread, and linked to the restoration of the amalgam, and identified with amalgam rebuilding efforts, and are the principle behind the substitution of deficient amalgam. However, an amalgam or resin restoration could be utilized in a tooth having conservative pulpal access, sound lateral walls, and less than 2 years to exfoliation. The dentist may want both ends of the carrier filled. Just click on the link below to download bds lecture notes on amalgam restoration in pdf format. Amalgam cavity preparation class 1 free download as powerpoint presentation.
The aim of this study was to compare teaching time with students clinical procedures in amalgam and. Management of class i and class ii amalgam restorations. Polishing amalgam restorations a selfstudy module developed by carlene paarmann, rdh, med. A dental restoration or dental filling is a treatment to restore the function, integrity, and morphology of missing tooth structure resulting from caries or external trauma as well as to the replacement of such structure supported by dental implants. First you will see the preparation of the tooth, including etching and bonding. Pediatric restorative dentistry types of restorations types. Amalgam restorations account for a significant portion of all dental restorations. Key concepts of amalgam cavity design dentalnotebook. Extensive preparation to hold an amalgam filling 3. Preparation designs recommended for class ii composite restorations have undergone an evolution from blacks class ii amalgam cavity preparation to less invasive proximal slot preparations that eliminate the. Amalgam restoration bds lecture notes pdf download. This chapter presents information about class iii and v amalgam restorations. Amalgam is nonadhesive it relies on being mechanically retained in the cavity.
The effect of 3 t mri on microleakage of amalgam restorations. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Pdf dental amalgam has served as an excellent and versatile restorative material for many years, despite periods of controversy. Great strides in dental research have led to a variety of alternatives to amalgam 3. There are properties of amalgam that are crucial when we consider the cavity design, some of these are listed below. In the student clinic, resin composite is used in approximately 58 percent of class ii restorations placed, and dental amalgam is used in the remaining 42 percent. Types of restorations dentistry columbia university. Operative dentistry mcqs university of health sciences. Restorative dentistry class ii total practice solution. Art with high viscosity gic and composite restorations in. Class ii cavity preparation introduction a class ii carious lesion develops apical to the contact area on the proximal surfaces of posterior teeth. Survival rates of art and composite restoration were observed to be 94. Recurrent caries was seen more often on the occlusal part of resinbased composite restorations than on the amalgam restorations.
Feb 15, 2018 hi guys, i am sharing bds lecture notes on amalgam restoration in pdf format. The main contraindication for use of composite for class iii, iv, and v restorations is an operating area that cannot be adequately isolated. Continue to supply the dentist with more amalgam until the preparation is slightly overfilled. Survival and reasons for failure of amalgam versus. We decided to eliminate the carious lesion and proceed with a direct composite restoration of the cavity. Determination of cavity borders outlines and extention for prevention.
The quality of routine class ii cavity preparations for amalgam article pdf available in acta odontologica scandinavica 471. A cusp fracture on the lower second premolar brought this patient to the of. The procedure for the removal of the carious lesion is the same as that of a class i. Class ii cavity preparation characteristics of an ideal class ii contact area carious lesion proximal view vertical section buccal view class ii carious lesions are diagnosed using bitewing radiographs. Class i, ii amalgam and composite restorations with varying depths performed for 104 patients 1459 years old referring key words amalgam restoration, composite restoration, postoperative sensitivity correspondence dr. Just click on the link below to download bds lecture notes on amalgam restoration in pdf. Amalgam restoration bds lecture notes pdf download studynama. The occlusal contacts are located predominately on surfaces that will be occupied by the restoration, with little or.
Case report amalgam contact hypersensitivity lesion. Raghad baidas rah alrefaie rasha alrasheed rana aldakheel. Class iii and v restorations in permanent teeth in high risk patients or teeth that cannot be isolated. Pdf this study compared the tensile loads required to dislodge class 3 composite restorations with and without retention grooves. Equipment and materials used in class 3 cavity preparation 2. Dental amalgam is used in all surfaces of posterior teeth and occasionally in the lingual pits of anterior teeth.
Amalgam is used for the restoration of many carious or fractured posterior teeth and in the replacement of failed restorations. To get the perfect cavity you need to have the proper set of instruments to prepare the cavity and to restore it using any of the following filling materials zoe temporary, gic, composite, amalgam etc. Teaching approaches in canadian faculties of dentistry programs specify required numbers of surfaces for each material. Class v restorations class v restorations,by definition, include the gingival one third i. Class iii, iv, and v direct composite restorations. Dec 29, 2017 class ii amalgam cavity preparation and restoration done by second year dental students for a class project in 2 rds class. The use of amalgam has been critically discussed due to its allergic and toxic potential upon mercury release 2. Almost all class iii and class iv restorations are appropriately restored with composite. They are of two broad typesdirect and indirectand are further classified by location and size. Instruments used for cavity preparation and restoration. Contact area carious lesion proximal view vertical section. Secondary caries was the main reason for failure in both materials.
The instruments used for cavity preparation and restoration are required during dental school college in pre clinical training it self. Class ii amalgam cavity preparation and restoration youtube. Pdf operative dentistry principles of cavity preparation. Equipment and materials used in class 3 cavity preparation. Pdf cavity designs for class ii amalgam restorations. Mar 27, 2020 survival rates of art and composite restoration were observed to be 94. Scientific developments in cariology, advances in dental biomaterials, and patients esthetic concerns have led to a reduction in amalgam restorations and an increase in composite restorations. An amalgam restoration that will contribute to the lingterm dental health of a. Amalgam must be mixed according to the manufacturers instructions. To investigate in vitro the effect of retentive grooves, gic type and insertion method on the fracture resistance of class ii glassionomer cement gic restorations. Amalgam is brittle in thin sections therefore there is a minimum 2mm depth for an adequate cavity, as well as many other key features in the cavity. One 18monthold child had a maxillary primary molar restored using a nanoionomer resin. Tofflemire, tband, compositight condensing and carving of amalgam using an amalgam carrier, add increments and condense using positive finger rest.
For example, for amalgam restoration, cavosurface angle of 90 degrees affords. Management of class i and class ii amalgam restorations with. Bss ii pdf created with pdffactory pro trial version 2 dental amalgam pdf created with pdffactory pro trial version 3 introduction. Lazar class iii restoration unica anterior the patient came to our attention for esthetic rehabilitation. Class iii amalgam preparation on the distal of a canine.
Extention of the preparation incisally, gingivally, mesially and distally untill the. Zaher altaki, department of operative dentistry, faculty of dentistry, syrian private university, syrian arab republic. Conversely, dental amalgam is recommended in class ii applications where. Patients often request for toothcolored composite as opposed to the lessesthetic amalgam.
Postoperative sensitivity of class i, ii amalgam and. For a more comprehensive understanding of dental caries management, further training and collaboration is strongly encouraged. Amalgam cavity preparation class 1 tooth enamel dentin. Fill the smaller and of the amalgam carrier and transfer to the dentist. Class iii restorations are indicated for defects located on the proximal surface of anterior teeth that do not affect the incisal edge. The finishing and polishing procedures should not be initiated on an amalgam restoration until the amalgam has reached its final set, at least 24 hours after it has been. Its use has been supplanted by toothcolored restorations primarily composite, which have. In reading a bitewing radiograph, it is important to know that a proximal lesion that appears to be 2 3. The universal tofflemire matrix system is used in class ii restorations. The first step is the development of the ideal cavity preparation. Distal surfaces of incisors and mesial surfaces of canine. Because the resource is a concise demonstration of the technique of class i amalgam restoration, other important related subjects dental caries and dental materials could not be covered in detail.
272 919 506 1164 1056 950 1076 1540 647 1123 353 1430 1488 964 870 444 1206 802 958 1513 1221 322 1025 49 729 435 1457 938 651 829 1128 60 904 1460 1225 395 727 420 39 1382 1496 334 145 1376 1391 2