Quantcast Anterior and Posterior Teeth. - Dental Anatomy and Physiology

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Custom Search
 
  
 
b. Anterior and Posterior Teeth. As indicated in paragraph 4-1, teeth may be
divided into anterior and posterior groups. Anterior teeth, commonly called "anteriors"
when referred to as a group, include the central and lateral incisors and the cuspids.
Posterior teeth, commonly called "posteriors" when referred to as a group, include the
bicuspids and molars. Anterior teeth differ from posterior teeth in their relative position
within the dental arch. They also differ in their form, their function, and their conformity
to that part of the arch in which they are located.
(1)  Anterior teeth. Anterior teeth are characterized by having single roots
and incisal edges or single-cusped crowns ending in narrow edges. These narrow
edges are designed to incise (bite off) relatively large amounts of food in eating.
Anterior teeth are located in the anterior part of the jaw. They are so aligned as to form
a smooth curving arch from the distal of the cuspid of one side of the arch to the distal
of the cuspid on the opposite side.
(2)  Posterior teeth. Posterior teeth differ from anterior teeth in that they may
have more than one root. They also differ in their form and function. They may also
have multiple cusps forming occlusal surfaces designed to crush and grind food into
small parts.
(a) Bicuspids. Most bicuspids have single roots but may have roots
which are partly or completely bifurcated (over one-half of all maxillary first bicuspids
have such bifurcations). As their name implies, most bicuspids have two cusps. The
mandibular second bicuspid may have either two or three cusps. The three-cusped
bicuspid has two lingual cusps and one buccal cusp.
(b) Molars. Molars are all multirooted (three roots in the maxillary arch
and two roots in the mandibular arch). See figure 4-1. Molars have four or more cusps.
First permanent mandibular molars have five functional cusps. The maxillary first
molars have four functional cusps and the cusp of Carabelli, a nonfunctional cusp
located on the mesioloingual surface. Third molars are commonly called "wisdom
teeth." They resemble second molars but are largely unpredictable as to form, size, and
number of roots.
Figure 4-1. Trifurcated and bifurcated roots.
MD0501
4-3



Medical News
Diagnosing deafness early will help teenagers' reading development
Deaf teenagers have better reading skills if they were identified...
medicalxpress.com
'Utter neglect' of rheumatic heart disease revealed by results from global study
Rheumatic heart disease (RHD) - the most common acquired heart...
medicalxpress.com
New study examines the effect of timing of folic acid supplementation during pregnancy
Taking folic acid before conception significantly reduces the risk of...
medicalxpress.com
A look at one woman’s long journey to diagnosis and treatment of rare disorder
This week’s Medical Mysteries column in The Washington Post tells...
scopeblog.stanford.edu
Web-savvy older adults who regularly indulge in culture may better retain 'health literacy'
The Institute of Medicine defines health literacy as the degree...
medicalxpress.com
Reported link between early life exposure to paracetamol and asthma 'overstated'
Respiratory infections are likely to have an influential role, the...
medicalxpress.com
Overweight linked to 500,000 cancer cases per year
Overweight and obesity is now causing nearly half a million...
medicalxpress.com
Therapy found effective in older, African-American lung cancer patients
University of Cincinnati researchers have found in a phase-2 clinical...
medicalxpress.com
Most Americans with HIV don't have virus under control, CDC says
(HealthDay)—Fewer than one-third of Americans living with HIV had the...
medicalxpress.com
Parents need to take lead on teen concussion prevention
(HealthDay)—Parents need to take an active role in protecting their...
medicalxpress.com
FDA Panel Wants Safer Epidural Steroid Shots
(MedPage Today) -- Majority votes to end epidural injections with...
medpagetoday.com
FDA advisory panel says steroid shots for back pain can continue
(HealthDay)—An expert advisory panel to the U.S. Food and Drug...
medicalxpress.com
Questioning Medicine: The Vitamin D Craze (CME/CE)
(MedPage Today) -- Maybe the focus should be on loss...
medpagetoday.com
Ebola isolation at US base 'pretty much vacation'
With plenty of flat screen TVs, game nights and even...
medicalxpress.com
Researchers identify protein that predicts post-concussion severity in professional athletes
New Penn Medicine research has found that elevated levels in...
medicalxpress.com
Full-day preschool linked with increased school readiness compared with part-day
Children who attended a full-day preschool program had higher scores...
medicalxpress.com
Study examines FDA influence on design of pivotal drug studies
An examination of the potential interaction between pharmaceutical companies and...
medicalxpress.com
New insights into breast cancer spread could yield better tests and treatments
A study combining tumor cells from patients with breast cancer...
medicalxpress.com
Every foot has a story: Why communication is key in radiology
Back in the day, radiology departments were simpler. After obtaining...
scopeblog.stanford.edu
Novel type 1 diabetes treatment shown to work on human beta cells transplanted into mice
A chemical produced in the pancreas that prevented and even...
medicalxpress.com
 


Privacy Statement - Copyright Information. - Contact Us

comments powered by Disqus

Integrated Publishing, Inc.
9438 US Hwy 19N #311 Port Richey, FL 34668

Phone For Parts Inquiries: (727) 755-3260
Google +