3“A prosthesis that replaces the lost natural dentition and associated Complete DentureDefinitions :“A prosthesis that replaces the lost natural dentition and associatedstructures of the mandible and / or the maxilla “ .Component Parts :Denture BaseDenture FlangeDenture Border (Edge)Denture Surfaces :Fitting SurfacePolished SurfaceOcclusal Surface
5Restoration of mastication. Objectives in complete denture construction:Restoration of mastication.Restoration of facial dimensions and contours.Restoration of speech.Restoration of the remaining natural tissues.Satisfaction and comfort of the patient.
6Anatomical Landmarks In Relation to Complete Denture: ExtraorallandmarksIntraoral landmarks
10Landmarks of Importance in Occlusal Plane Orientation Interpupillary lineAla tragus line
11Landmarks restored by proper lip support Naso – Labial sulcusBecomes deeper with ageand with loss of teethPhiltrumbecomes flat with loss of teethModiolusmoves inwards and downwardsVermillion borderbecomes reduced in size
12Landmarks restored by Proper Vertical Dimension Vermillion borderAngle of the mouthbecomes inflammed angular cheilitis
17Maxillary Supporting Structures Incisive Papilla1 . The incisive papilla is a thick part of the mucous membrane coveringthe incisive foramen.2 . It is located at the anterior end of the median palatine raphae .3 . The nasopalatine nerves and vessels pass through the incisive foramento supply the anterior 2 / 3 of the palate.4 . In some cases due to the excessive bone resorption, the papilla may lieon the crest of the ridge.5 . The incisive papilla should be relieved to avoid pressure on the incisivenerves and vessels.
18Cont. max. supporting structures Palatine RugaeRugae Area1 . It is an irregular shaped elevation of the soft tissue extendinglaterally from the midline in the anterior part of the hard palate.2 . If serves as one of stress bearing area in the palate .
19Cont. max. supporting structures Median Palatine RaphaeMedian Palatine Raphae1 . The midline of the hard palate is covered by a thin layer ofmucoperiostium , that covers the median palatine suture .2 . That suture joins the right and the left halves of the hard palate.3 . It is usually relieved to increase denture stability by preventing its rocking .
20Cont. max. supporting structures Torus PalatinusWhen small relievedWhen large surgical excision
21Cont. max. supporting structures Fovea PalatinaFovia Palatina1 . It is helps in the determination of the posterior borderof the upper denture.2 . The posterior border of the upper denture should be 2 mmposterior to the fovea Palatina .
22Cont. max. supporting structures Residual Alveolar RidgeResidual Alveolar Ridge1 . It should be firm .2 . since it is usually well developed, it mightbe considered as a primary stress bearing area.
23Cont. max. supporting structures TuberosityTuberosity1 . It is important for retention and support of the upper dentureagainst lateral movement.2 . The denture should cover it .
24Cont. max. supporting structures Buttress Part Of BoneButtress Part Of Bone1 . It is formed of the lower portion of the zygomatic process of the maxilla(the area above the first molar teeth) .2 . It provides excellent resistance to the vertical forces(Support).
25Maxillary Limiting Structures Labial FrenumLabial FrenumLabial FrenumIt must be relieved in the denture by making a V-shape notchin the labial flange opposite to its position .
26Cont. Maxillary Limiting Structures Labial VestibuleLabial Vestibule1 . It Is the reflection of the mucosa of the lip to the mucosa of the alveolar process in the labial vestibule.2 . The denture in this area is in relation to the orbicularis oris and the superior incisive muscles .3 . These muscles limit the thickness and the length of the labial flangeof the denture.
27Cont. Maxillary Limiting Structures Buccal FrenumBuccal Frenum1 . It is a fold of mucous membrane (tendon of the buccinator muscle)varies in size in number and in position .2 . A notch is made in the denture flange opposite to its position tofacilitate its functional movements.
28Cont. Maxillary Limiting Structures Buccal VestibuleBuccal Vestibule1 . The denture in this area is related to buccinator muscle.2 . Buccal flanges must extend in the buccal vestibule .3 . Due to the horizontal direction of the fibers of this muscle contractionof this muscle will not displace the denture.
29Cont. Maxillary Limiting Structures Hamular NotchHamular Notch1 . It is one of the important landmarks for determination of the posteriorlimit of the upper denture .2 . A straight line from hamular notch on one side to the other on the otherside determine the posterior limit of the upper denture
30Cont. Maxillary Limiting Structures Vibrating Line( Ah Line)Vibrating Line( Ah Line)Postdam area1 . It separate the movable part from the immovable part of the soft palate.2 . This line is 2mm posterior to the fovea palatine .3 . This line determines the posterior end of the upper denture.
31Cont. Maxillary Limiting Structures Curvature of the soft palateIClass I gentle curvatureClass II medium curvatureClass III abrupt curvatureIIIII
34Denture should be notched Mandibular Limiting StructuresLabial FrenumDenture should be notchedopposite to it.Labial Frenum
35Cont. Mandibular Limiting Structures Labial VestibuleLabial VestibuleLimits the denture flangethickness and length.
36Cont. Mandibular Limiting Structures Buccal FrenumBuccal Frenum1 . It is a fold of mucous membrane in the premolar area, movement ofthe lip and the cheek move the frenum .2 . A notch is made in the lower denture to accommodate the frenum.
37Cont. Mandibular Limiting Structures Buccal VestibuleBuccal Vestibule1 . The denture in this area is related to the buccinator muscle .2 . Its contraction does not displace the lower denture so flanges ofthe lower denture must extend in the buccal vestibule.
38Cont. Mandibular Limiting Structures Masseter muscle influencing areaMasseteric notchDistobuccal area
39Cont. Mandibular Limiting Structures Posterior end of retromolar padPosterior endof retromolar padIt constitutes the posterior limit of the lower dentureat which postdamming can be performed.
40Cont. Mandibular Limiting Structures Palatoglossal archDistolingual areaDenture overextension in thisarea will cause sore throat.
41Cont. Mandibular Limiting Structures Lingual PouchLingual PouchLingual pouchMore posteriorly the lingual flanges are related to the lingual pouch withits boundaries which are :Posteriorly : The palatoglosssus muscle .Anteriorly : The Mylohyoid muscle.Medially : The tongue .Laterally : The medial aspect of the mandible.
43Cont. Mandibular Limiting Structures Sublingual salivarygland areaSublingual salivarygland areaSublingual salivarygland areaThe lingual flanges of the lower denture should not extend in this areabecause with excessive resorption of the mandible the gland maybulge superiorly above the body of the mandible.
44Cont. Mandibular Limiting Structures Lingual FrenumLingual Frenum1 . More anteriorly a fold mucous membrane attach the mucosa of thetongue tip to mucosa of the floor of the mouth2 . It moves with the movement of the tongue so a notch is made toaccommodate the frenum.
45Michael H. Hart (born April 28, 1932 in New York City) Graduate of the Bronx High School of Science, received his undergraduate degree at Cornell University in mathematics and later earned a Ph.D. in astrophysics at Princeton University. He also holds graduate degrees in physics, astronomy, and computer science, as well as a law degree. He was a research scientist at NASA before leaving to be a professor of physics at Trinity University in San Antonio, Texas.
48منذ سنين وأنت تفخر بأنك مسلم... فماذا فعلت ليفخر الإسلام بك؟؟ عن أبي هريرة رضي الله عنه أن رسول الله صلى الله عليه وسلم وقف على أناس جلوس فقال ( ألا أخبركم بخيركم من شركم ) قال : فسكتوا ، فقال ذلك ثلاث مرات ، فقال رجل : بلى يا رسول الله أخبرنا بخيرنا من شرنا ، قال ( خيركم من يرجى خيره ويؤمن شره وشركم من لا يرجى خيره ولا يؤمن شره ) رواه الترمذي.أحب العباد إلى الله تعالى أنفعهم لعياله
49Mandibular Supporting Structures Residual Ridge(Fibrous band ofconnective tissue)Residual Ridge1. It covers the crest of the lower ridge.2. Its mobility may cause pressure symptoms under the lower denture.3 . Also can affect denture stability .
51Cont. Mandibular Supporting Structures Buccal Shelf Of BoneBuccal ShelfOf Bone1 . The area that lies between the crest of the residual ridge andthe external oblique ridge.2 . It is the primary stress bearing area in the lower arch .3 . It forms good support for the lower denture .
52Cont. Mandibular Supporting Structures Retromolar padRetromolar pad1 . It is a pear shaped area of mucous membrane at the posterior end of themandibular ridge and anterior to the pterygomandibular raphae .2 . It consists of mucous glands , temporal tendon , fibers of thebuccinators and superior constrictor muscle .3 . Lower denture should cover this area for retention and to coverthe buccal shelf of bone (Primary stress bearing area) it act as valve sealarea for the lower denture.
53Cont. Mandibular Supporting Structures Torus mandibularisWhen small relievedWhen large surgical excisionTorus mandibularis