The major symptoms of air pockets in the lungs are shortness of breath and difficulty breathing, according to WebMD. These air pockets form after the lining between air sacs is des...The slow dull pain is conducted by the C fibers which are elicited by all three types of stimuli. It is almost always caused by release of chemicals liberated by the injured tissue. These are endogenous chemicals called algogenic (pain producing) substances. Algogenic substances stimulate nociceptors to produce pain.Figure 53-2 Possible results of pocket therapy. An active pocket can become inactive and heal by means of a long junctional epithelium. Surgical pocket therapy can result in a healthy sulcus, with or without gain of attachment. Improved gingival attachment promotes restoration of bone height, with re-formation of periodontal ligament …A diagnosis of chronic periapical periodontitis associated with an infected necrotic pulp was made for 13. The patient suffered a ‘sodium hypochlorite accident’ whilst the previous dentist was preparing the root canal. After initial pain management, reassurance and follow-up (Table 5.2.3), the treatment options discussed with the patient …1. Removable bridge (tooth borne partial) where there is no movement during function. 2. On free-end extensions where undercut is so small that longer clasp arms will not be retentive. 3. On free-end extensions when minimal undercut is utilized. Contra – indications: On free-end extensions except as noted above.1. Oral and Dental Anatomy. The oral cavity consists of soft and hard tissues. The lips, cheeks, tongue, gingivae, palate, and tonsils are the former, while the teeth are the latter. The oral cavity is bounded by the lips anteriorly, the nasopharynx posteriorly, the cheeks laterally, the tongue and sublingual tissues inferiorly, and the soft ...Crown and Root Development. Dental development can be considered to have two components: (1) the formation of crowns and roots and (2) the eruption of the teeth. Of these two, the former seems to be …Learning Objectives. • Define and pronounce the key terms in this chapter. • Discuss the dentin-pulp complex and describe the properties of dentin and pulp. • Describe the processes of the apposition and the maturation of dentin. • Outline the types of dentin. • Label the anatomical components of pulp.b. Passage of the electron by the side or near the nucleus due to which the electron will be deflected or decelerated. i. Electron directly hitting the nucleus. When the electron directly hits the nucleus of the tungsten atom in target material, the entire kinetic energy of it is transformed into a single X-ray photon.May 6, 2021 ... ... Fundamentals of X-Rays | INBDE, ADAT. Mental Dental•166K views · 19:31 · Go to channel · EMERGENCY DRUGS IN DENTISTRY. TaughtWell SimplifyE...Function, features and precaution. Used to pick up, transport and place amalgam into the cavity preparation. A plunger/lever pushes amalgam out from working end into the cavity preparation. The working end may be Teflon® coated so the amalgam will not stick. Care must be taken to expel the excess amalgam or it will set inside the working end.Another important growth change that occurs in the cranial base is the remodelling that takes place in the anterior cranial fossa. This brings about a forward displacement of the frontal bone and the nasal area. 6. Figure 1.3 Diagrammatic representation of changes in the cranial base angle.Jun 21, 2017 ... PERIODONTAL POCKET (PART I) II PERIODONTOLOGY II DENTAL NOTES II PATHOGENESIS II SO EASY. Dentistry Madeeasy•17K views · 0:53. Go to channel ...Introduction. Resin composites may be used to restore anterior and posterior teeth. When used anteriorly, aesthetics are often of primary concern, requiring durable high surface polish, excellent colour matching and colour stability. Posteriorly, where biting forces may be up to 600 N, high compressive and tensile strength and excellent wear ...Figure 19.4 This patient has a crown on the upper right canine, and two separate cantilever conventional bridges with metal–ceramic retainers on the central incisors and lateral incisor pontics. There is a third minimum preparation (resin retained) cantilever bridge replacing the upper left canine using the first premolar tooth as an …Jan 15, 2015 · Conclusion. A periodontal flap is a section of gingiva, mucosa, or both that is surgically separated from the underlying tissues to provide for the visibility of and access to the bone and root surface. The flap also allows the gingiva to be displaced to a different location in patients with mucogingival involvement. A submucosal collection of hemoglobin or hemosiderin, produced by extravasation and/or lysis of red blood cells, may impart a red, blue, or brown ephemeral appearance to the oral mucosa. Melanin, which is synthesized by melanocytes and nevus cells, may appear as brown, blue, or black, depending on the amount of melanin and its …Jan 1, 2015 · Introduction. Impression materials are used to produce a detailed replica of the teeth and the tissues of the oral cavity. From this replica, or impression, a model can be made that is used in the construction of full dentures, partial dentures, crowns, bridges and inlays. Over the years, a wide variety of impression materials and associated ... FIGURE 7-20 The color of the teeth has changed because of desiccation. Obviously, any shade decisions must be made while the natural teeth are not desiccated. When laminates are placed in the mouth and the shade is perfect, the neighboring teeth may be slightly whiter at the completion of the procedure.All teeth are composed of the same four tissues: Enamel – covering the whole crown of the tooth. Dentine – forming the inner bulk of the crown and root. Cementum – a thin covering of the root dentine only. Pulp – the inner neurovascular tissue of the tooth, within the central pulp chamber. The gross anatomy of the tooth is shown in ...Mandibular First Premolar. Figures 10-1 through 10-12 illustrate the mandibular first premolar from all aspects. The mandibular first premolar is the fourth tooth from the median line and the first posterior tooth in the mandible. This tooth is situated between the canine and second premolar and has some characteristics common to …The following three components make up the laser cavity: • Active medium. • Pumping mechanism. • Optical resonator. The active medium is composed of chemical elements, molecules, or compounds. Lasers are generically named for the material of the active medium, which can be (1) a container of gas, such as a canister of carbon dioxide …Indications for the Use of the Procedure. There are two main indications for apicoectomy in selected teeth. The first category comprises teeth with active periapical pathology with adequate endodontic therapy. These are teeth that continue to be symptomatic with clinically sound conventional orthograde endodontic therapy ( Figures …Jul 2, 2020 · 10.1055/b-0034-56506 Periodontitis Periodontitis maintains its position as one of the most widespread diseases of mankind, but fortunately only ca. 5–10% of all cases are aggressive, rapidly-progre… Pocket Dentistry - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free. perio.Перегляньте профіль arths arth на LinkedIn, найбільшій у світі професійній спільноті. arths має 1 вакансію у своєму профілі. Перегляньте повний профіль на LinkedIn і …After the roots of the primary dentition are completed at about age 3, several of the primary teeth are in use only for a relatively short period. Some of the primary teeth are found to be missing at age 4, and by age 6, as many as 19% may be missing. 1 By age 10, only about 26% may be present. The second molars in both arches and the maxillary ...Are you a fan of The Sims 4 and have a passion for dentistry? Look no further than the Dentist Career Mod in Sims 4. This exciting mod allows you to take your Sim’s dental career t...Pneumocephalus is the medical condition defined as having a pocket of gas, generally air, trapped within the intracranial area. Pneumocephalus is also referred to as an intracrania...The Permanent Maxillary Molars. The maxillary molars differ in design from any of the teeth previously described. These teeth assist the mandibular molars in performing the major portion of the work in the mastication and comminution of food. They are the largest and strongest maxillary teeth, by virtue both of their bulk and of their …Finger instrument. Colour coded by size. The six colours used most often are: size 15 (white), 20 (yellow), 25 (red), 30 (blue), 35 (green) and 40 (black). Also available in size 6 (pink), 8 (grey) and 10 (purple) Operator gradually increases the size of the file to smooth, shape and enlarge canal. The larger the number of the file, the larger ...1. The gingiva and the covering of the hard palate, termed the masticatory mucosa (The gingiva is the part of the oral mucosa that covers the alveolar processes of the jaws and surrounds the necks of the teeth.) 2. The dorsum of the tongue, covered by specialized mucosa. 3. The oral mucous membrane lining the remainder of the oral cavity.Apical root resorption during tooth movement can result in significant shortening of the roots directly due to continued pressure during orthodontic tooth movements. Teeth will remain asymptomatic, and provided the underlying forces used to tooth movement are not heavy, the pulp remains vital.Figure 62-7 Treatment of a grade II furcation by osteoplasty and odontoplasty. A, This mandibular first molar has been treated endodontically and an area of caries in the furcation repaired. A Class II furcation is present. B, Results of flap debridement, osteoplasty, and severe odontoplasty 5 years postoperatively.Finger instrument. Colour coded by size. The six colours used most often are: size 15 (white), 20 (yellow), 25 (red), 30 (blue), 35 (green) and 40 (black). Also available in size 6 (pink), 8 (grey) and 10 (purple) Operator gradually increases the size of the file to smooth, shape and enlarge canal. The larger the number of the file, the larger ...Jan 9, 2015 · Introduction. Resin composites may be used to restore anterior and posterior teeth. When used anteriorly, aesthetics are often of primary concern, requiring durable high surface polish, excellent colour matching and colour stability. Posteriorly, where biting forces may be up to 600 N, high compressive and tensile strength and excellent wear ... Jan 1, 2015 · 1. Micromechanical interlocking, chemical bonding with enamel and dentin, or both. 2. Copolymerization with the resin matrix of composite materials. Before the total-etch technique was adopted, enamel bonding agents were used only to enhance the wetting and adaptation of resin to conditioned enamel surfaces. Figure 19.4 This patient has a crown on the upper right canine, and two separate cantilever conventional bridges with metal–ceramic retainers on the central incisors and lateral incisor pontics. There is a third minimum preparation (resin retained) cantilever bridge replacing the upper left canine using the first premolar tooth as an …Aug 26, 2022 ... Dr. Sanjay Kalra Vice President- SAFES, DM Endocrinology, AIIMS New Delhi, FRCP (Edin) talks about What causes a Dental Pocket || Dental ...These indications are not definitive, remain largely subjective and typically have to be applied on a case by case assessment. The indications for crowns are: replacement crowns. protection of root-filled teeth. broken down and worn teeth. unsightly dental appearance. cracked teeth. realignment of occlusal plane.Esthetic materials are those that are tooth colored. The direct-placement esthetic materials used most commonly are (1) composite resin, (2) glass ionomer cement, (3) resin-modified glass ionomer cement (also called hybrid ionomer), and (4) compomer. These are listed in their chronologic order of development.The mandibular molars perform the major portion of the work of the lower jaw in mastication and in the comminution of food. They are the largest and strongest mandibular teeth, both because of their bulk and because of their anchorage. The crowns of the molars are shorter cervico-occlusally than those of the teeth anterior to them, but …Feb 23, 2021 · Numerous studies investigating the survival of endodontically treated teeth have documented that at most 1% to 2% are lost per year, and one very large study of almost 1.5 million cases reported that only 2.9% were lost after 8 years. A recent meta-analysis showed a mean tooth survival of 87% after 8 to 10 years. Cephalometric radiography. Cephalometric radiography is a standardized and reproducible form of skull radiography used extensively in orthodontics to assess the relationships of the teeth to the jaws and the jaws to the rest of the facial skeleton. Standardization was essential for the development of cephalometry – the …Introduction. A crown is a restoration that provides complete coverage of the coronal portion of a tooth. It may be composed of a variety of materials. Steps in the construction of a crown are shown in Figure 1.10. After diagnosis and treatment planning, the tooth is prepared. A temporary crown is made and then “worn” between the ...Procedure. The stages involved in the construction of copy dentures are as follows: Record impressions of the dentures using one of the techniques described below. The technician uses these to produce the replicas. Provide an intercuspal record to help the technician mount the replicas on an articulator. Select a shade of tooth.May 25, 2021 · Principles of Cavity Preparation. Cavity preparation, the procedure used to remove demineralized enamel and infected dentin consists of four steps: Opening a cavity or removing a poorly fitting restoration. Removing infected dentin. Evaluating residual tooth tissue and removing unsupported or structurally compromised enamel. Antique pocket watches hold a certain allure that captivates collectors and enthusiasts alike. The craftsmanship, elegance, and historical significance make them highly sought afte...Procedure. The stages involved in the construction of copy dentures are as follows: Record impressions of the dentures using one of the techniques described below. The technician uses these to produce the replicas. Provide an intercuspal record to help the technician mount the replicas on an articulator. Select a shade of tooth.Pocket Dentistry is a blog by mrzezo, a dentist who shares his knowledge and experience in various dental topics. In the Orthodontics category, you can find …Dental Caries. The primary causes of tooth loss can be attributed to two main tooth and periodontal tissue problems, ie, caries and periodontitis, both caused by bacterial biofilm,1 followed by trauma and a dentist’s actions (iatrogenic causes). Caries is by far the most common disease in the world.Pneumocephalus is the medical condition defined as having a pocket of gas, generally air, trapped within the intracranial area. Pneumocephalus is also referred to as an intracrania...Jan 4, 2015 · The oral cavity is the upper end and the beginning of the digestive system and at its posterior end forms a common pathway with the respiratory system. The oral cavity begins at the lips and cheeks and extends posteriorly to the area of the palatine tonsils, which are usually referred to as the tonsils. May 1, 2023 · Resilient Mindset. Apr 25, 2023 by mrzezo in General Dentistry Comments Off. 8Resilient Mindset CHAPTER OVERVIEW Importance of resilient thinking styles in dentistry Identifying our thinking traps Using cognitive behavioural therapy as a dental professional Developing an optimistic mindset Compassionate mindset Growth…. read more. Pockets provide an ideal environment for bacteria to grow, and may spread infection to the structures that keep teeth anchored in the mouth. Although periodontal pockets are …Jan 4, 2015 · Mesial aspect ( Fig. 12-5; see also Fig. 12-8, D) The crown of a maxillary central incisor is triangular, with the base of the triangle at the cervix and the apex at the incisal ridge. The incisal ridge of the crown is centered over the middle of the root. This alignment is characteristic of maxillary central and lateral incisors. Jan 8, 2015 · A dental exam consists of many parts, with the dentist evaluating the soft tissue, the periodontal tissue, and the teeth. Your role in this data gathering process is very important. The assistant will prepare the setup, assist in the collection of information, and record the information in the patient’s record as dictated by the operator. Learn how to use various indices to evaluate plaque, gingivitis, and periodontal disease in clinical and epidemiologic settings. Find definitions, diagrams, and formulas for …Jan 5, 2015 · Classification of Oral Mucosa. Oral mucosa almost continuously lines the oral cavity. Oral mucosa is composed of stratified squamous epithelium overlying a connective tissue proper, or lamina propria, with possibly a deeper submucosa ( Figure 9-1; see Chapter 8 ). FIGURE 9-1 General histological features of an oral mucosa composed of stratified ... Jan 17, 2015 · Location. Major connectors should be designed and located with the following guidelines in mind: 1. Major connectors should be free of movable tissue. 2. Impingement of gingival tissue should be avoided. 3. Bony and soft tissue prominences should be avoided during placement and removal. 4. Jan 9, 2015 · An indirect cast-metal restoration also requires a specific tooth preparation form that provides (1) draw to provide seating of the rigid restoration, (2) a beveled cavosurface configuration to provide optimal fit, and (3) retention of the casting by virtue of the degrees of parallelism of the prepared walls. A submucosal collection of hemoglobin or hemosiderin, produced by extravasation and/or lysis of red blood cells, may impart a red, blue, or brown ephemeral appearance to the oral mucosa. Melanin, which is synthesized by melanocytes and nevus cells, may appear as brown, blue, or black, depending on the amount of melanin and its …The steps involved in carrying out a risk assessment on a hazard, whatever its nature, should always follow the same pattern. 1.Identify the hazard – a chemical, a piece of equipment, a procedure that occurs in the workplace, etc. 2.Identify who may be harmed – certain staff, certain patients, visitors, everyone, etc.The development of the permanent dentition is discussed in Chapter 6. FIGURE 16-1 Permanent anterior teeth identified, which include the incisors and canines. FIGURE 16-2 Example of lobe development in a permanent anterior tooth. The long crown of an anterior tooth has an incisal surface, which is its masticatory surface ( Figure 16-3 ).Minecraft Pocket Edition has become one of the most popular mobile games of all time, captivating players with its endless possibilities and creative gameplay. Minecraft Pocket Edi...Mechanical properties are defined by the laws of mechanics—that is, the physical science dealing with forces that act on bodies and the resultant motion, deformation, or stresses that those bodies experience. This chapter focuses primarily on static bodies—those at rest—rather than on dynamic bodies, which are in motion.Jan 8, 2015 · When a tooth is prepared for a class II, III, or IV restoration, at least one interproximal wall of the tooth has been removed. A matrix system creates a temporary interproximal wall for the amalgam, composite resin, or intermediate restorative material to be placed against ( Fig. 49-1 ). (The plural term for matrix is matrices.) 1. The gingiva and the covering of the hard palate, termed the masticatory mucosa (The gingiva is the part of the oral mucosa that covers the alveolar processes of the jaws and surrounds the necks of the teeth.) 2. The dorsum of the tongue, covered by specialized mucosa. 3. The oral mucous membrane lining the remainder of the oral cavity.Pocket Dentistry is a blog by mrzezo, a dentist who shares his knowledge and experience in various dental topics. In the Orthodontics category, you can find …There are two types of semi-adjustable articulators: The Arcon (Fig 14-2c), in which the fossae are on the upper member and, the non-Arcon (Fig 14-2d), in which the fossae are on the lower member. Fig. 14-2c Arcon articulator (Denar Mark 2). The fossae are on the upper member, the condyles on the lower. The condyles are not rigidly held in …An onlay can incorporate an inlay preparation or be restricted to the occlusal surface to replace an eroded occlusal table, or to raise the occlusal vertical dimension (OVD). Various cavity configurations of onlays and veneers are possible; for example, a veneerlay restoration that combines an onlay and veneer preparation.Depth of pin in restorative material should be 2–2.5 mm. At least 1 mm of core material should surround the pin. Pin placement should be at least 0.5 mm inside the enamel-dentine junction. The first two …Antique pocket watches hold a special place in the hearts of collectors and enthusiasts. These timepieces not only serve as a testament to the craftsmanship of the past but also pr...The Pocket Hose, distributed by Telebrands Corporation, does not carry a warranty. It does, however, allow customers to return the Pocket Hose for a refund of the purchase price fo...Esthetic materials are those that are tooth colored. The direct-placement esthetic materials used most commonly are (1) composite resin, (2) glass ionomer cement, (3) resin-modified glass ionomer cement (also called hybrid ionomer), and (4) compomer. These are listed in their chronologic order of development.Jan 8, 2015 · Anatomy of the skull. The skull is the topmost part of the bony skeleton of the body, the head, and is made up of three main areas. Cranium – the hollow cavity which surrounds the brain. Face – the front vertical part of the skull, containing the orbital cavities of the eyes and the nasal cavity of the nose. Jaws – the upper and lower ... Jun 21, 2017 ... PERIODONTAL POCKET (PART I) II PERIODONTOLOGY II DENTAL NOTES II PATHOGENESIS II SO EASY. Dentistry Madeeasy•17K views · 0:53. Go to channel ...A Instrument balance—a balanced instrument has working ends that are aligned with the long axis of the handle. 1. During a work stroke, for example, in calculus removal balance ensures that finger pressure applied against the handle is transferred to the working end, which results in pressure against the tooth. 2.These indications are not definitive, remain largely subjective and typically have to be applied on a case by case assessment. The indications for crowns are: replacement crowns. protection of root-filled teeth. broken down and worn teeth. unsightly dental appearance. cracked teeth. realignment of occlusal plane.Probing depth (referred to as pocket depth if periodontal disease is present) is the distance from the gingival margin to the apical portion of the gingival sulcus. Probing depths in healthy gingival sulci normally range from 1 to 3 mm. A depth of greater than 3 mm is a possible cause for concern.1. The gingiva and the covering of the hard palate, termed the masticatory mucosa (The gingiva is the part of the oral mucosa that covers the alveolar processes of the jaws and surrounds the necks of the teeth.) 2. The dorsum of the tongue, covered by specialized mucosa. 3. The oral mucous membrane lining the remainder of the oral cavity.The Operating Room. The operating room in both hospital and general dental practice should be of simple design, the walls and furniture should be made of easy-to-clean materials, and the equipment normally required should be accommodated without overcrowding. It should be well ventilated and kept at an even temperature of 18–21°C, …Are you a fan of The Sims 4 and have a passion for dentistry? Look no further than the Dentist Career Mod in Sims 4. This exciting mod allows you to take your Sim’s dental career t...Topical anesthesia can be useful when applied to the oral mucosa. It may be employed prior to local anesthetic injections in the mouth to lessen the discomfort of needle penetration. Topical anesthetics for intraoral use are available in a number of formulations including creams, ointments and sprays. The local anesthetic agents most commonly ...The roots of mandibular first premolars are almost as thick but slightly shorter than the roots of the second premolar. Y The roots of mandibular second premolars (like maxillary second premolars) are nearly twice as long as the crowns. In both arches, second premolars have a larger root-to-crown ratio than on firsts. Kissun & Kissun Dental Surgery, Stanger, KwaZulu-Natal. 8 likes · 1 talking about this. If you're looking for gentle, dental care look no further. I will help you leave with a smile on your face Another important growth change that occurs in the cranial base is the remodelling that takes place in the anterior cranial fossa. This brings about a forward displacement of the frontal bone and the nasal area. 6. Figure 1.3 Diagrammatic representation of changes in the cranial base angle.by Dr. Mark S. Offenback | Aug 8, 2022 | General Dentistry. Pants pockets are wonderful, useful things. Gum pockets aren’t. In fact, when pockets form in the …An indirect cast-metal restoration also requires a specific tooth preparation form that provides (1) draw to provide seating of the rigid restoration, (2) a beveled cavosurface configuration to provide optimal fit, and (3) retention of the casting by virtue of the degrees of parallelism of the prepared walls.Save $100/mo on average after refinancing with MotoRefi. 2020 has been an interesting year for finances, to say the least. Many families have been hit with unexpected expenses, whi...Finger instrument. Colour coded by size. The six colours used most often are: size 15 (white), 20 (yellow), 25 (red), 30 (blue), 35 (green) and 40 (black). Also available in size 6 (pink), 8 (grey) and 10 (purple) Operator gradually increases the size of the file to smooth, shape and enlarge canal. The larger the number of the file, the larger ...
In principle, the shape of the external root will be reflected in the internal morphology of a root canal system. This is considered a tenet of the relationship of pulp-root anatomy. Each of the individual 16 types of teeth in the permanent dentition has its own individual root canal system morphology or shape.. Tiles unlimited game
Figure 19.4 This patient has a crown on the upper right canine, and two separate cantilever conventional bridges with metal–ceramic retainers on the central incisors and lateral incisor pontics. There is a third minimum preparation (resin retained) cantilever bridge replacing the upper left canine using the first premolar tooth as an …3.1 Introduction to partial prosthetics. Removable partial dentures are appliances that can be removed by the patient, and replace one or more missing teeth but not an entire arch. Prevent teeth drifting or over-erupting into edentulous spaces. Partial dentures may be designed to utilise the remaining natural teeth in two ways.Pneumocephalus is the medical condition defined as having a pocket of gas, generally air, trapped within the intracranial area. Pneumocephalus is also referred to as an intracrania...The dental hygienist may be given the responsibility of placing a periodontal dressing when assisting the dentist during surgery, when performing postoperative care, or when a patient returns to the practice with a postsurgical emergency. Necessary items for placing a periodontal dressing are listed in Table 33.1. TABLE 33.1.1. Micromechanical interlocking, chemical bonding with enamel and dentin, or both. 2. Copolymerization with the resin matrix of composite materials. Before the total-etch technique was adopted, enamel bonding agents were used only to enhance the wetting and adaptation of resin to conditioned enamel surfaces.Minecraft Pocket Edition has become one of the most popular mobile games of all time, captivating players with its endless possibilities and creative gameplay. Minecraft Pocket Edi...Jan 8, 2015 · Anatomy of the skull. The skull is the topmost part of the bony skeleton of the body, the head, and is made up of three main areas. Cranium – the hollow cavity which surrounds the brain. Face – the front vertical part of the skull, containing the orbital cavities of the eyes and the nasal cavity of the nose. Jaws – the upper and lower ... The handpiece provides power and rotary motion, whereas the dental bur, which is held securely in the handpiece, does the actual cutting or polishing. Handpieces and burs have a variety of uses in restorative dentistry ( Box 19-2 ). The two most commonly used types of handpieces are the low-speed handpiece and the high-speed handpiece.According to the American Academy of Implant Dentistry, the number of Americans with implants is over three million, and each year over 500,000 new patients get implants. Below, we...Dental radiographs are an integral part of the diagnostic process in clinical dentistry. Appropriate radiographic selection and interpretation along with clinical information and other tests are essential for the formulation of a strong differential diagnosis. Fig. 1. Panoramic radiograph showing dentition along with maxillofacial structures.Function, features and precaution. Used to pick up, transport and place amalgam into the cavity preparation. A plunger/lever pushes amalgam out from working end into the cavity preparation. The working end may be Teflon® coated so the amalgam will not stick. Care must be taken to expel the excess amalgam or it will set inside the working end.According to the number of surfaces involved: Simple pocket: It involves only one tooth surface. Compound pocket: It involves two or more tooth surfaces. Complex pocket: …Conclusion. A periodontal flap is a section of gingiva, mucosa, or both that is surgically separated from the underlying tissues to provide for the visibility of and access to the bone and root surface. The flap also allows the gingiva to be displaced to a different location in patients with mucogingival involvement.According to Kvinnsland et al. [ 15 ], 53% of iatrogenic perforations occur during insertion of posts (prosthodontic treatment); the remaining 47% occur during routine root canal treatment. In 74.5% of cases, the complications occurred in the maxilla and the remaining 25.5% occurred in the mandibular arch.The mandibular molars perform the major portion of the work of the lower jaw in mastication and in the comminution of food. They are the largest and strongest mandibular teeth, both because of their bulk and because of their anchorage. The crowns of the molars are shorter cervico-occlusally than those of the teeth anterior to them, but ….