Recognizing and Correcting Developing Malocclusions

Recognizing and Correcting Developing Malocclusions

A Problem-Oriented Approach to Orthodontics

Buschang, Peter H.; Araujo, Eustaquio A.

John Wiley & Sons Inc

04/2025

352

Dura

9781119912545

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List of Contributors xiii

Foreword xv

Preface xvii

1 A guide for timing orthodontic treatment 1
Eustaquio A. Araujo, DDS, MDS and Bernardo Q. Souki, DDS, MSD, PhD

1.1 Occlusal deviations with indications for interceptive orthodontic treatment 3

1.2 Ideal timing for early treatment 5

2 Development of the occlusion: what to do and when to do it 9
Bernardo Q. Souki, DDS, MSD, PhD

2.1 Stage 1--eruption of deciduous teeth 9

2.2 Stage 2--completion of the deciduous dentition 11

2.3 Stage 3--eruption of first permanent molars 16

2.4 Stage 4--eruption of permanent incisors 18

2.5 Stage 5--eruption of mandibular canines and first premolars 20

2.6 Stage 6--eruption of second premolars 21

2.7 Stage 7--eruption of maxillary canines and second molars 23

2.8 Conclusions 24

3 Mixed dentition diagnosis: assessing the degree of severity of a developing malocclusion 27
Eustaquio A. Araujo, DDS, MDS

3.1 Assessing treatment need, complexity, and outcome 27

3.2 Assessing interceptive treatment outcome 31

4 The genetics of the dental occlusion and malocclusion 35
Robyn Silberstein, DDS, PhD and Mary MacDougall, PhD

4.1 Introduction 35

4.2 Chromosomal abnormalities 37

4.3 Single gene defects 38

4.4 Multifactorial inheritance 38

4.5 Genetics of nonsyndromic malocclusion 40

4.6 Altered tooth number 42

4.7 Altered tooth structure 43

4.8 Altered eruption 43

4.9 Radiographic deviations associated with genetic conditions 45

4.10 Conclusion 47

5 Class I: Recognizing and correcting intraarch deviations 51

5.1 Section I: The development and etiology of a Class I malocclusion 51
Peter H. Buschang, MA, PhD

5.1 Introduction 51

5.2 Prevalence of Class I malocclusion and changes in arch form 52

5.3 Class I malocclusion and the dental compensatory mechanism 58

5.4 What is anterior mandibular malalignment is related to? 60

5.2 Section II: Intercepting developing Class I problems 67
Eustaquio A. Araujo, DDS, MDS

5.5 Tooth size arch length discrepancy (TSALD) 67

5.6 The assessment of crowding in the mixed dentition 68

6 Recognizing and correcting Class II malocclusions 107

6.1 Section I: The development, phenotypic characteristics, and etiology of Class II malocclusion 107
Peter H. Buschang, MA, PhD

6.1 Introduction 107

6.2 Characterization of the Class II, division 2 phenotype 110

6.3 Characterization of the Class II division 1 phenotype 111

6.3.1 Hyperdivergent vs. hypodivergent Class II division 1 malocclusion 114

6.4 Developmental changes of Class IIs 115

6.5 Class II developmental changes 118

6.6 Etiology 119

6.2 Section II: Class II treatment: problems and solutions 131
Eustaquio A. Araujo, DDS, MDS

6.7 Early Class II adjustment 132

6.8 Treatment 136

7 Recognizing and correcting Class III malocclusions 161

7.1 Section I: The development, phenotypic characteristics, and etiology of Class III malocclusion 161
Peter H. Buschang, MA, PhD

7.1 Introduction 161

7.2 Characterization of the Class III phenotype 163

7.3 Class III development 168

7.4 Etiology 170

7.2 Section II: Class III treatment: problems and solutions 179
Eustaquio A. Araujo, DDS, MDS

7.5 Diagnosis 183

7.6 Communication 187

7.7 Early intervention 188

7.8 Orthopedic maxillary expansion 188

7.9 Face mask and/or chincup orthopedics 191

7.10 Leeway space control 194

7.11 Orthodontic mechanics 194

7.12 Finishing 194

7.13 Retention 194

7.14 Growth reevaluation 195

8 Special topics 225

8.1 Section I: Habit control: the role of function in open-bite treatment 225
Ildeu Andrade, Jr., DDS, MS, PhD and Eustaquio A. Araujo, DDS, MDS

8.1 Nutritive vs. nonnutritive sucking habits 225

8.2 Tongue physiology 226

8.3 Tongue thrusting and forward resting posture of the tongue 227

8.4 Breaking the habit 227

8.5 Treatment 229

8.2 Section II: Eruption deviations 239
Bernardo Q. Souki, DDS, MSD, PhD and Eustaquio A. Araujo, DDS, MDS

8.6 Eruption deviations 239

8.7 Eruption deviation and PIOM: what are the most frequent eruption disturbances in each stage of dental development? 241

8.3 Section III: Strategies for managing missing second premolar teeth in the young patient 255
David B. Kennedy, BDS, LDS (RCSEng), MSD, FRCD(C)

8.8 General concepts 255

8.9 Longevity of the second deciduous molar, resorption, and infraocclusion 256

8.10 The alveolar ridge in extracted deciduous molars 257

8.11 Overall dental health and cost 258

8.12 Case histories 258

8.13 Summary 270

8.4 Section IV: Principles and techniques of premolar autotransplantation 273
Ewa M. Czochrowska, DDS, PhD and Pawel Plakwicz, DDS, PhD

8.14 Class II malocclusion with congenitally missing lower second premolars 274

8.15 Traumatic loss of upper incisor/s 274

8.16 Uneven tooth distribution with multiple agenesis 274

8.17 Surgery 277

8.18 Selection of anesthesia (local vs. general) 277

8.19 Premolar to premolar transplantation 277

8.20 Premolar to anterior maxilla transplantation 279

8.21 Postoperative instructions 279

8.22 Follow-up 279

8.23 Pulp healing 280

8.24 Periodontal healing 281

8.25 Root growth 281

8.26 Reshaping to incisor morphology 281

8.27 Alveolar bone after autotransplantation 281

8.5 Section V: Dental trauma: revisiting posttrauma protocols and long-term follow-ups 285
Eustaquio A. Araujo, DDS, MDS and Gabriel Miranda, DDS, MS

8.28 An overview of dental trauma 285

8.29 Orthodontic treatment and dental trauma 286

8.30 Managing traumatized teeth and preserving bone width - The decoronation approach 288

8.31 Final considerations 295

8.6 Section VI: Sleep-disordered breathing (SDB) in the growing child 299
Juan Martin Palomo, DDS, MDS and Luciane M. de Menezes, PhD

8.32 The need for sleep 299

8.33 Diagnosis and management of sleep-disordered breathing (SDB) and obstructive sleep apnea (OSA) in children 300

8.34 Risk factors for OSA in children 302

8.35 Consequences of SDB in children 305

8.36 Treatment options for the dental and skeletal consequences of SDB in children 309

8.37 New technologies: the use of apps and devices for SDB and OSA in children 310

8.38 Conclusion 310

8.7 Section VII: Mixed dentition orthodontic mechanics 313
Gerald S. Samson, DDS

8.39 Definitions and terminology 314

References 326

Index 327
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developing malocclusion; intra-arch deviations; Genetics dental occlusions; mixed dentition orthodontic mechanics; missing second premolar teeth; premolar autotransplantation; Abnormal eruption; congenitally missing teeth