Straight Wire Technique: the McLaughlin- Bennet treatment philosophy

M1 | September 20-22 2024 in Skopje (Macedonia)

MODULE 1

Orthodontic diagnosis and treatment planning; the Straight Wire MB 5.0
orthodontic appliance.

The patient first visit

• Medical history, dental and orthodontic history, physical examination
• Analysis of the temporomandibular joint (TMJ) and respiratory function; diagnosis and treatment of sleep apnea syndrome (OSAS)
• Facial and intra-oral photographs; the aesthetic analysis of the face according to Arnett
• The models of the dental arches

The radiological examination

• Orthopantomography, latero-lateral and posterior-anterior headfilm, 3D CBCT radiology
• Cephalometric analysis of hard tissues according to McLaughlin
• Cephalometric analysis of soft tissues according to Arnett-McLaughlin; getting a repeatable natural head position (NHP)

Orthodontic treatment planning

• The problem list and treatment goals
• The dental Visual Treatment Objective (VTO) according to McLaughlin

The normal occlusion

• The Andrews 6 occlusal keys
• Tooth-to-tooth or fossa-cusp occlusion according to P.K. Thomas

The evolution of the Straight-Wire technique from its origins until today

• Historical review: the thoughts of Andrews, Roth, McLaughlin and Bennett
• The MBT pre-adjusted appliance
• The MB 5.0 pre-adjusted appliance, latest evolution of the MBT system

Bracket placement in orthodontics and the bracket positioning chart according to McLaughlin and Bennett

• Direct bonding (clinical sequence)
• Indirect bonding (laboratory and clinical sequence)
• The new indirect bonding systems with digital technology and 3D printer

Hands-on session

• Execution of cephalometric analysis of hard and soft tissues on lateral headfilm brought by the course participants: a free demo of the cephalometric software valid for 9 months will be installed on PC laptop
• The dental VTO on a clinical case brought by the course participants

M2 | November 29 – December 01 2024 in Skopje (Macedonia)

MODULE 2

Class I malocclusion and intra-arch treatment mechanics; Class II malocclusion, inter-arch treatment mechanics Part I; therapy of impacted canines.

Class I malocclusion

• Dento-alveolar discrepancy: crowding and diastemas
• The dental bimaxillary protrusion
• Inter-proximal reduction (IPR) or “stripping” as a useful method to gain space in the arch
• The agenesis of the lateral incisors: when to open and when to close the spaces

The intra-arch treatment mechanics

• Leveling and aligning, overbite correction (OVB), space closure
• Laceback, bendback, passive and active tieback
• The sequence of archwires in extraction and non-extraction cases
• The individualized arch form, in compliance with the basal bone shape and the functional matrix
• The anchorage needs in extraction cases
• Bracket placement in cases of canine substitution (lateral agenesis)

The diagnosis of Class II malocclusion

• Skeletal and dental malocclusion; cephalometric analysis and face analysis
• The McLaughlin-Arnett analysis for the treatment planning (mandibular advancement therapy or distalization of the upper arch)
• The vertical control in the treatment of Class II malocclusions
• Analysis of slide from centric relationship (CR) to centric occlusion (OC)
• The diagnosis of respiratory problems associated with Class II malocclusions

Treatment of the growing patient

• The Twin Block appliance
• Fixed functional appliances

Extraction treatment in Class II malocclusions

• The selection of teeth to be extracted on the basis of the anchorage emerged from the dental VTO
• Biomechanics in the McLaughlin-Bennett MB 5.0 appliance

Treatment of Class II malocclusions in the adult patients

• Orthodontic camouflage in Class II malocclusions: guidelines and mechanics
• Orthognathic surgery according to Arnett in Class II malocclusions

The impacted canines

• Etiology and diagnosis
• Early therapy of ectopic canines in the mixed dentition
• The orthodontic-surgical treatment of the impacted canine in the permanent dentition: the palatal and buccal approach
• The versatility of the MB 5.0 appliance in the therapy of the impacted canines

Hands-on session

• Indirect bonding: bracket positioning according to McLaughlin-Bennett
• Indirect bonding with digital technology and bonding trays made with a 3D printer
• Execution of silicone bonding trays on plaster models brought by the course participants, for the transfer of the brackets onto the patient’s teeth
• Placing brackets on plaster models of patients who will start treatment

M3 | January 31 – February 1 2025 in in Pforzheim, Forestadent headquarter, Germany

MODULE 3

The correction of Class III malocclusion, inter-arch treatment mechanics part II; the vertical and transversal problems.
With the presence of Dr. John Bennett.

The vertical problems

• Open bite and deep bite: diagnosis and orthodontic treatment mechanics

The transverse problems

• Diagnosis of skeletal or dentoalveolar contraction of the maxilla: according to the University of California of Los Angeles (UCLA)
• The expansion of the maxilla in mixed dentition, in permanent dentition, and in the adult patient
• Maxillary expansion and its relationship with nasal breathing and obstructive sleep apnea syndrome (OSAS)
• Skeletal expansion versus dentoalveolar expansion

Class III malocclusion

• The vertical, horizontal and transversal components in the Class III malocclusions
• The differential diagnosis between true Class III and pseudo-Class III malocclusion (CR-CO discrepancy)
• Orthopedic maxillary advancement with face mask in the growing patient: skeletal and dentoalveolar components
• Extraction and non-extraction treatment of Class III malocclusion in the permanent dentition
• Camouflage treatment in the Class III malocclusions
• Orthognathic surgery in the Class III malocclusion

The asymmetries

• The differential diagnosis and treatment of skeletal asymmetry, dento-alveolar asymmetry, CR-CO lateral sliding

Temporomandibular joint disease (TMJ)

• The causes and treatment of TMJ pathology
• The relationship between occlusion and craniomandibular disorders

The finalization of the orthodontic case

• The American Board of Orthodontics (ABO) standards

The orthodontic retention

• The wraparound retainer
• The Cad-Cam fixed retainer
• The vacuum-formed retainers

Hands-on session

FRIDAY AFTERNOON

The MB 5.0 intra-arch treatment mechanics

• Positioning of lacebacks, passive and active tiebacks, bendbacks on typodonts

SATURDAY (ALL DAY)

Wire bending

• First, second and third order finishing bends on stainless steel archwires
• Creation of sectionals to be used in cases of second premolar extraction
• The bite-opening curves on stainless steel archwires

Analysis and discussion of clinical cases brought by the participants

• Course participants are encouraged to bring clinical cases at each module, with facial and intra-oral photographs, orthopantomography, latero-lateral headfilm, cephalometric analysis of hard and soft tissues, dental VTO
• A cephalometric software will be installed on participants’ PC laptop throughout the course duration for advanced diagnosis and treatment planning