Home / Orthodontics (page 4)

Orthodontics

Tip edge technique final.. 1

During the early 1930s, P.R Begg reverted to the use of ribbon arch brackets- Permitted free tipping followed by controlled uprighting Use of round wires Use of differential forces(2 oz) Demands on anchorage units was reduced However the vertically facing slot had the following limitations: Hindrance in manipulation Reduced mesio-distal …

Read More »

TIP EDGE APPLAINCE

  By removing predetermined, diagonally opposed corners from the conventional edgewise archwire slot, the Tip-Edge bracket is created.                      This permits the desired distal crown tipping required for differential tooth movement.                      Preadjusted in three dimensions the Tip-Edge slot permits the use of straight arch wires in the majority of …

Read More »

Tip Edge (2).. 1

1958 – Edgewise bracket slots angulated by Reed Holdaway 1950’s– Torque incorporated in edgewise brackets by Ivan Lee 1961 – Jarabak Light Wire Appliance by Joseph R. Jarabak 1970’s-Fully preadjusted appliance by Lawrence F.Andrews Above & other refinements made major repositioning of teeth & jaws more difficult Overview of the …

Read More »

tip and torque college 1

In orthodontics, torque is often associated with the angulations of long axes of teeth and pertains to the positioning of root apices with respect to crowns         The generation of torque at an activation site results in the delivery of a torsional force system to the dentition. The action-reaction counterpart …

Read More »

THIRD MOLARS.. 1

Third molars are the teeth which are most often missing, impacted and with altered morphology. Advances in dental anthropology states that there is a reduction in the number of teeth and size of jaws on evolutionary basis for the past 1,00,000 years. Third incisors ,third premolars and  fourth molars have …

Read More »

THIRD MOLARS (2).. 1

Third molars are the teeth which are most often missing, impacted and with altered morphology. Advances in dental anthropology states that there is a reduction in the number of teeth and size of jaws on evolutionary basis for the past 1,00,000 years. Third incisors ,third premolars and  fourth molars have …

Read More »

Theories of growth..

Growth site: All surfaces of bones are covered by irregularly arranged growth fields. These can be either resorptive or depository. Growth fields having a special role in the growth of particular bones are C/as growth sites (e.g. mandibular condyle). Growth center: Growth centers are locations where growth takes place independently …

Read More »

THE LEVEL ANCHORAGE SYSTEM

It is a complete orthodontic treatment system designed for those goal oriented orthodontists who would like to treat efficiently to a predetermined goal and reach that goal on a routine basis. It is designed to quantify the anchorage requirements of the orthodontic problem and thus clarify the necessary treatment steps …

Read More »

THE HEADGEAR..

INTRODUCTION HISTORY TYPES OF HEADGEAR USES OF HEADGEAR HEADGEAR ASSEMBLY SELECTION OF CASES CLINICAL PROCEDURES BIOMECHANICS & FORCE PRESCRIPTION HEAD GEARS IN COMBINATION THERAPY CONCLUSION Bilaterally symmetrical face bow Power-arm unilateral face bow Soldered offset or fixed union unilateral face bow Swivel offset or swivel union unilateral face bow Spring …

Read More »

THE FINISHING TOUCH

HORIZONTAL CONSIDERATIONS VERTICAL CONSIDERATIONS TRANSVERSE CONSIDERATIONS DYNAMIC CONSIDERATIONS FINAL STAGE OF FINISHING – SETTLING THE CASE. FINISHING TO ABO REQUIREMENTS ANDREWS SIX KEYS OF NORMAL OCCLUSION The finishing procedures are considered, from the beginning stages of the treatment, as a part of total scheme of treatment. A clear-cut vision of …

Read More »

The Cranial Vault-3 (2)

Close relation between ectomeninx and endomeninx except in areas of venous sinuses. Fibres of Falx cerebri, Falx cerebelli and Tentorium cerebelli. Shape of brain Ectomeninx: Mesoderm –   Frontal, Parietal, sphenoid, petrous temporal & occipital. Neural crest –   Lacrimal, nasal, squamous temporal, zygomatic, maxilla & mandible

Read More »

Temporomandibular joint..

Resistance met on closure –pressure reduced on biting side Fulcrum around hard food Pressure increased on contralateral side Same side – separation – dislocation SLP – active ,positions disc anteriorly on condyle Stabilizes joint Teeth approach intercuspation –pressure increases Post rotation – intermediate zone-resting position Points to remember Ligaments do …

Read More »

T.M.D IN ORTHODONTICS..

TEMPEROMANDIBULAR DISORDER INTRODUCTION DEFINITION HISTORICAL BACKGROUND SYNDROME  Vs DISORDER CLASSIFICATION ETIOLOGY EPIDEMIOLOGY SYMPTOMS AND SIGNS Orthodontists are constantly being challenged with the task of providing their patients with acceptable esthetics and masticatory function. Although esthetics is often the patient’s immediate and primary goal, function becomes far more important over the …

Read More »

swa..

Finishing and detailing is the last stage of treatment . The finishing procedures are considered ,from the beginning stages of treatment , as a part of total scheme of treatment The objective of any orthodontic treatment depends on the end goal In the finishing and detailing stage we continue to …

Read More »

SUTURES & DFO-NANDA..

SUTURAL GROWTH AND ITS REGULATION FUNCTIONS MORPHOGENESIS AND MICROSCOPIC MORPHOLOGY MACROSCOPIC MORPHOLOGY SUTURAL SECONDARY CARTILAGES BIOCHEMICAL COMPOSITION OF SUTURES TRANSPLANTATION EXPERIMENTS TRANSLATION OF FORCES TO THE SUTURE TRANSDUCTION OF FORCES INTO CELLULAR ACTIVITY RESPONSE OF SUTURES TO EXTRINSIC MECHANICAL FORCES IN VIVO INFLUENCE OF AGE RESPONSE OF SUTURES TO FORCES …

Read More »

Surgicalortho

Two of the distinct specialities in dentistry are oral and Maxillofacial surgery and Orthodontics. They have much in common  in that both are based on the underlying basic science – Craniofacial growth & development and anatomy   when an adult patient whose growth has completed presents to us with severe …

Read More »

Surgical Orthodontics (2).. 1

Cephalometric Analysis   Precautions while doing analysis Use of normative values ALONE not very appropriate, since they cannot be accurately applied to different ethnic groups, males and females, persons with varying builds, etc.      DO  NOT  IGNORE  THE  S.D. Cephalometric Analysis   Transverse dimension   Grummon’s analysis is a useful analysis …

Read More »

Sure smile..

The changes in x, y and z  co-ordinates can be done in individual case to show case difficulty and treatment changes. Inter arch contacts and relations ,such as  over bite and over jet ,can be viewed with a cutting plane tool ,which displays interproximal or an transverse view anywhere along …

Read More »

study model

Introduction. Diagnostic Aids. Study Models (Defn). History. Purpose of Making Study Models. Objectives of Ideal Orthodontic Study Models. Uses of Study Models. Steps in fabrication of Study Models.    – Impression Making.    – Disinfection of Impression.    – Taking a Wax Bite.    – Casting.    – ABO requirements …

Read More »

stomatognathic

Tongueà free at one end Mandibleà only movable bone in the craniofacial region TMJà maximum movements Teethà deciduous and permanent Functionsà simultaneous Given by MELVIN MOSS Original concept of FUNCTIONAL CRANIAL componentà Van der Klaaus Control for growth- soft tissues Growth of face à response of functional needs à mediated …

Read More »