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Topic: Maxillary first molar

	Importance Of Maxillary First Molar For Sex Determination
		Amongst all the teeth, the maxillary first molar is found to exhibit greatest sexual dimorphism.
		The B-L diameter of maxillary first molar was measured with vernier calliper (resolution 0.02 mm) intraorally in patient as well as on the cast.
		From the range of B-L diameter of molar it can be concluded that whenever the B-L diameter of maxillary first molar is greater than 10.7 mm the probability of sex being male is 100%, from the present study, this finding could prove to be of immense medico-legal importance in sex determination of human being.
	www.ispub.com /ostia/index.php?xmlFilePath=journals/ijds/vol4n2/molar.xml (1056 words)

	The District of Columbia Academy of Veterinary Medicine
		The maxillary fourth premolar is a tri-rooted tooth with a large distal root and 2 mesial roots (mesiobuccal and mesiopalatal) emanating from a common root trunk.
		Therefore, since the first molar is being extracted, it may serve as a lever fulcrum for the periodontal elevator in extraction of the fourth premolar (Fig 7).
		Likewise, the crown of the second molar may be used as a lever fulcrum to aid extraction of the first molar.
	www.dcavm.org /02jan.htm (11802 words)

	Andy's Dental Anatomy Questions
		Distal surface of the maxillary first molar is in the same plane as the distal surface of the mandibular first molar.
		Distofacial cusp of the maxillary first molar falls in the same plane as the distal surface of the mandibular first molar.
		Mesiolingual cusp of the maxillary first molar falls in the central fossa of the mandibular first molar.
	www.andyfuturerdh.com /nbe/dentalanatomy.htm (1107 words)

	Maxillary Molar Distalization with a Modified Pendulum Appliance
		The Nance acrylic incorporates four occlusal rests that are bonded either to the deciduous molars or to the first and second bicuspids.
		The pendulum arc of the appliance tends to cause cross bite, because the force of the TMA springs is delivered to the molar crowns, leaving the roots in a mesial position.
		It is of critical importance to determine the maxillary space available for first molar retraction by measuring the distance from the maxillary first molar to the Ricketts pterygoid vertical plane on the lateral cephalogram.
	www.godotnews.it /public/maxillary.htm (1271 words)

	Ape. Apes - Introduction, Genera.
		The pollex reaches nearly or quite to the base of the first phalanx of the index of the hand, and thehallux to the proximal end of the second phalanx of the index of the foot.
		It was first made known to modern by Dr. Thomas Savage, but it appears to have been seen by Hanno of Carthage, in his voyage south of the pillars of Hercules.
		In the gibbons we first find that part upon which he body rests in sitting provided with naked callous spaces, termed (from that part of the haunch bone to which they are applied, the ischium) "ischial callosities'ä they are, however, still small.
	www.1902-encyclopedia.com /A/APE/ape-1.html (5740 words)

	What Are Dental Discrete Traits?
		The maxillary incisors and canines are scored for the presence and severity of this trait on the lingual surface.
		The term ‘deflecting wrinkle’ describes the occurance in first molars of an "L"shaped wrinkle in the distal side of the mesiolingual cusp.
		This trait is a measure of the size of the mesial marginal ridge on the maxillary canines.
	www.geocities.com /CapeCanaveral/Hangar/6514/huh.html (1083 words)

	Indian Orthodontic Society (Site not responding. Last check: 2007-10-27)
		Molar distalization is a technique that has added a new column in the practice of every orthodontist to produce consistent, predictable and high quality results.
		Maxillary arch constriction and mesiopalatal rotation of upper first molars are two components of most Class II malocclusions that must be corrected either before or during sagittal correction.
		Treatment plan involved distalization of first and second molars en masse to overcorrected Class I relation, Nance holding arch was attached to first premolars for anchorage and 0.010 × 0.030 NiTi open coil spring (Ortho Organizers) was compressed 10 mm in excess of interbracket span between first premolars and first molars.
	www.netodontist.com /projects/iosonline/journal/reviewarticle.htm (4431 words)

	INSECT - Online Information article about INSECT
		The first representatives of this group are the moles, or Telpidae, in which the lower ends of the tibia and fibula are united (fig 3, Moles.
		The first sternal bone is so much produced as to extend forward as far as a vertical line from the second cervical vertebra, carrying with it the very short almost quadrate clavicles, which are articulated with its anterior extremity and externally with the humeri, being also connected ligamentously with the scapula.
		The relative proportions of the first and second upper former in the absence of well-defined fringes to the digits, but agree-incisors are also as in Talpa, but there are only two pairs of lower ing with it closely in dentition, in the large size of the infra-orbital incisors.
	encyclopedia.jrank.org /I27_INV/INSECT.html (6953 words)

	ABO - Road to Certification (Site not responding. Last check: 2007-10-27)
		The buccal cusp of the maxillary second molar should align with the embrasure or interproximal contact between the mandibular first and second molars.
		The remaining occlusion distal to the maxillary second premolar and mandibular first molar are adjusted accordingly.
		The overjet is evaluated by articulating the models and viewing the labiolingual relationship of the maxillary arch relative to the mandibular arch.
	www.americanboardortho.com /professionals/road_to_cert/phase_iii/GradingSystem/gsys14.aspx (163 words)

	Unusual Maxillary First Molar with 2 Palatal Canals Within a Single Root: A Case Report
		This case report describes a permanent maxillary first molar with 5 root canals (2 MB, 1 DB, and 2 palatal), with unusual palatal canal morphology in that 2 canals with separate orifices join in the apical third.
		The endodontic significance of the mesiobuccal root of the maxillary first molar.
		Canal configuration in the mesiobuccal root of the maxillary first molar: a clinical study.
	www.cda-adc.ca /jcda/vol-67/issue-4/211.html (1712 words)

	ABO - Road to Certification (Site not responding. Last check: 2007-10-27)
		* For the malocclusion to satisfy the Class II Category requirement, the mesiobuccal cusp of the maxillary permanent first molar must occlude, at least on one side, in the embrasure between the mandibular second premolar and the mandibular permanent molar, or farther to the mesial.
		If the maxillary or mandibular permanent first molar is missing, the buccal cusp of the maxillary second premolar must occlude in the embrasure between the mandibular first and second premolars, or farther to the mesial.
		If the maxillary permanent first molar is missing, the buccal cusp of the maxillary second premolar must occlude in the mesiobuccal groove of the mandibular permanent first molar, or farther to the distal.
	www.americanboardortho.com /professionals/road_to_cert/phase_iii/exhibit/category_7 (182 words)

	THE PERMANENT MOLAR TEETH
		Molar teeth by definition are cheek teeth that are NOT preceded by primary teeth.
		In contrast to the molars, permanent incisors, canines, and premolars are succedaneous (successional teeth).
		When compared to first molar roots, those of the second tend to be more parallel and to have a more distal inclination.
	www.forensicdentistryonline.org /Tooth_morphology/adult_molar_morph.htm (2114 words)

	MOLAR
		Facial: The crown is shorter occluso-cervically and narrower mesiodistally whe compared to the first molar.
		Occlusal: The crown of this tooth is the smallest of the maxillary molars.
		Facial: When compared to the first molar, the second molar crown is shorter both mesiodistally and from the cervix to the occlusal surface.
	dentistry.uic.edu /Depts/oralb/MOLAR.htm (2123 words)

	2000 CDA Journal - Feature Article, Copyright 2000 Journal of the California Dental Association (Site not responding. Last check: 2007-10-27)
		The purpose of this study was to examine the capability of NiTi 0.04 taper rotary files to decrease the incidence of procedural errors (especially straightening of curved canals) in comparison to stainless-steel 0.02 taper K files in the hands of undergraduate dental students at the University of Southern California.
		One hundred ninety six extracted hydrated human molars that had been stored in a sterile saline and thymol solution were randomly selected to comprise equally of mandibular and maxillary first molars.
		Subsequently, the odd-numbered group was instructed to prepare the mandibular first molar using rotary NiTi 0.04 taper at the same time the even group was instructed to prepare the maxillary first molar using hand stainless-steel K files.
	www.cda.org /cda_member/pubs/journal/jour0600/files.html (2305 words)

	OHSU School of Dentistry - Graduate Endodontics
		Weine FS, Gerstein H, Evanson L. Canal configuration in the mesiobuccal root of the maxillary first molar and its endodontic significance.
		Vertucci FJ, Gegauff A. Root canal anatomy of the maxillary first premolar.
		Teixeira FB, Sano CL, Gomes B, Zaia A, Ferraz C, Souza-Filho F. A preliminary in vitro study of the incidence and position of the root canal isthmus in maxillary and mandibular first molars.
	www.ohsu.edu /sod/endo/classic_lit_topics/Morpho.html (527 words)

	THE MERCK MANUAL, Sec. 9, Ch. 106, Teeth And Periodontium
		The buccal (outer) cusps of the maxillary posterior teeth are external to the corresponding cusps of the mandibular posterior teeth.
		Because the outer parts of all maxillary teeth are normally external to the mandibular teeth, the lips and cheeks are displaced from between the teeth so that they are not bitten.
		All the maxillary teeth should contact the corresponding mandibular teeth, so that the powerful masticatory forces (which may be > 100 lb in the molar region) are widely distributed.
	www.merck.com /pubs/mmanual/section9/chapter106/106d.htm (604 words)

	Norton Report-2
		The mandible was maintained in anatomic continuity with the skull by virtue of decomposed soft tissue at the areas of articulation with the skull and by an embalmer wire perforating the maxillary and mandibular anterior jaw structures.
		The first question was that of the date of the dental interproximal radiographs (Figs.
		Occlusal-lingual metallic restoration also was confused with the same restoration in the adjacent tooth (maxillary right first molar).
	mcadams.posc.mu.edu /parnell/norton2.htm (1879 words)

	OCCLUSION
		The molar relationship is such that the mandibular permanent molar is situated mesially to the maxillary first molar.
		The horizontal distance between the labioincisal surfaces of the maxillary incisors and the linquoincisal surfaces of the mandibular incisors.
		Second Molar Relationship- The mesio buccal cusp of the maxillary second primary molar occludes with the buccal groove of the mandibular second primary molar.
	www.gpc.edu /~jweir/1902/occlusion.htm (603 words)

	Dental Anatomy and Anomalies
		The most commonly affected teeth are mandibular primary first molar, mandibular primary second molar, maxillary first molar and maxillary primary second molar in that order.
		The most commonly affected teeth are the permanent maxillary first molars, maxillary canines, and permanent mandibular lateral incisors.
		Morphology of the distal surface of the primary second molar crown and root lends to entrapment of an abnormally tilted permanent first molar
	www1.umn.edu /dental/courses/dent_5501/dentalt2.html (1827 words)

	[No title]
		Ectopic eruption of a permanent maxillary first molar may be an early sign of an increased risk for ectopic eruption of permanent maxillary canine leading to root resorption of the permanent maxillary incisors
		One in four patients with ectopic eruption of the permanent maxillary canine had previously demonstrated pathological root resorption of the primary maxillary second molar due to ectopic eruption of the permanent maxillary first molar.
		The authors suggest that “patients with ectopic maxillary first molar eruption leading to pathological root resorption of the maxillary second primary molar” be “followed closely during the period of premolar and canine eruption.”
	www.dentalflavor.com /id30_m.htm (1116 words)

	Endodontics - DentalVet.com (Site not responding. Last check: 2007-10-27)
		The branch of dentistry concerned with the aetiology, prevention, diagnosis and treatment of conditions that affect the tooth pulp, root and periapical tissues.
		Fractured primary canine with abscessation apical to first premolar
		Radiograph of fractured maxillary canine tooth with periapical lucency.
	www.dentalvet.com /Encyclopedia/P00352_SC01096.htm (290 words)

	Untitled
		Impaction of the first permanent molar is often diagnosed as ectopic eruption.
		Carr GE: Ectopic eruption of the first permanent maxillary molar in cleft lip and cleft palate children.
		Kurol J, Bjerklin K: Resorption of maxillary second primary molars caused by ectopic eruption of the maxillary first permanent molar: a longitudinal and histological study.
	home.flash.net /~dkennel/ectopic.htm (1003 words)

	Measurement of Buccal Bone Plate Thickness Using C(100md.com)
		From the buccal root, the distances from the mesiobuccal and distobuccal root of the maxillary second molar to the buccal bone plate were the largest at 4.63mm and 3.61mm, respectively.
		Considering the results of this study in relation to clinical applications, the thicknesses from the palatal root to the buccal bone plate in the maxillary first and second molars were 10.69mm and 10.17mm, respectively.
		According to the results of this study, the palatal root of the maxillary first premolar was 2.47mm (4.15mm-1.68mm) away from the buccal root, which was more distant than the 1.95mm (3.94mm-1.99mm) in the second premolar.
	eng.100md.com /html/En/20050916/00782.htm (1909 words)

	Endo Fax (Site not responding. Last check: 2007-10-27)
		Eighty-one percent of first molars and 59% of second molars had a separate mesiolingual canal orifice.
		It occurred as a separate canal in 54.9% of first molars, 45.6% of second molars, and joined in all third molars.
		J Endod 2002 Apr;28(4):324-7 When the maxillary first molars were considered separately, the frequency of MB2 canal detection for the microscope, dental loupes, and no magnification groups was 71.1%, 62.5%, and 17.2%, respectively.
	www.endoexperience.com /fax-Jan-03.htm (926 words)

	JJRC.1--Owsley. 3.2.1 Burial 5 Dentition
		The left maxillary central and lateral incisor and canine sockets are not visible due to erosion.
		Maxillary teeth present include the left central incisor, canine, second premolar and first molar and the right central incisor, canine and first molar.
		A fourth facet is formed by moderate distal wear of the left second premolar and slight mesial wear on the occlusal surface of the left first molar.
	www.apva.org /resource/jjrc/vol1/do321.html (551 words)

	Gaining access to root canals
		Locate the larger palatal canal first because it is easier to find and will act as a reference point for locating the orifices of the smaller buccal canals.
		Maxillary second molars have three or four canals, but don’t be surprised if you come across a tooth with two canals, one palatal and one buccal.
		An important difference from the first molar is that the orifices of the mesial canals are not always corresponding to their cusp tips in the second molars.
	www.healthmantra.com /ypb/jan01/endo13.htm (1496 words)

	AGD - The effect of variation in etching times on dentin bonding (Site not responding. Last check: 2007-10-27)
		This study investigated the morphology of the mesiobuccal root of the maxillary first molar.
		The first and second mesiobuccal canals were exposed, soaked in fl India ink, decalcified, dehydrated, and made transparent.
		The configurations of the root canals in the mesiobuccal root were studied under magnification (2.6x) and classified according to Weine’s four types of root canal configurations.
	www.agd.org /library/2004/feb/scott.asp (126 words)

	[No title]
		The arterial supply of the mandible is from the internal maxillary artery from the external carotid with contributions to the inferior alveolar artery through the mandibular foramen and the mental artery through the mental foramen.
		This is based on the relationship of the mesiobuccal cusp of the maxillary first molar to the buccal groove of the mandibular first molar.
		The universal numbering system for permanent teeth begins with the right third molar of the maxilla to the left third molar of the maxilla(number 16) and then goes to the left third molar of the mandible(number 17) to the right third molar of the mandible(number 32).
	www.utmb.edu /otoref/Grnds/Mandible-fx-0006/Mandible-fx-0006.doc (2998 words)

	Our Services - Periodontal Therapy - Surgical Treatment
		Severe alveolar bone loss around the root results in a probable division of the maxillary first molar.
		A maxillary first molar with the root sectioned at the level of the division.
		Removing the front root of a lower second molar and using it as a bridge anchor (abutment) to replace a missing first molar, prevents the need for a partial denture or dental implant.
	www.smiletonight.com /ServPerioSurg.htm (440 words)

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