Related Experiment Video
Updated: Feb 10, 2026
04:13
Less-Invasive Technique for Non-stabilized Mandibular Fracture in Mouse Models
Published on: September 27, 2024
888
Simultaneous Reduction Malarplasty and Reduction Mandibuloplasty: Less Mandibular Hyperplasia with Masseter
Panxi Yu1, Qian Wu2, Mengdie Wei3
1Center of Craniomaxillofacial Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, 33 Badachu Road, Shijingshan District, Beijing, 100144, People's Republic of China.
Aesthetic Plastic Surgery
|February 9, 2026
Summary
Simultaneous reduction malarplasty with zygomatic arch elevation reduces masseter muscle thickening and mandibular hyperplasia after reduction mandibuloplasty, improving aesthetic outcomes. This combined approach offers better results than mandibuloplasty alone.
Area of Science:
- Plastic Surgery
- Maxillofacial Surgery
- Aesthetic Surgery
Background:
- Bone hyperplasia post-reduction mandibuloplasty can necessitate revision surgery.
- Masseter muscle hypertrophy is a key factor in postoperative mandibular hyperplasia.
- Clinical observations suggest combining reduction malarplasty with zygomatic arch elevation may mitigate masseter accumulation and subsequent mandibular hyperplasia.
Purpose of the Study:
- To evaluate the efficacy of simultaneous reduction malarplasty with zygomatic arch elevation in preventing masseter muscle accumulation and mandibular hyperplasia after reduction mandibuloplasty.
- To compare outcomes between patients undergoing combined procedures versus reduction mandibuloplasty alone.
Main Methods:
- Retrospective review of patients from September 2015 to April 2024.
- Analysis of computed tomography data to measure mandibular volume changes (preoperative, immediate postoperative, follow-up).
- Calculation of resected and regenerated mandibular bone volume, masseter thickness, and zygomatic arch elevation distance.
Main Results:
- The combined-operation group (n=52) showed significantly less masseter thickening (0.89 ± 1.21 mm) compared to the single-operation group (n=35) (2.70 ± 1.10 mm).
- The single-operation group experienced more severe masseter thickening and mandibular hyperplasia.
- Masseter thickening correlated positively with mandibular resected volume, and mandibular hyperplasia correlated positively with masseter thickening.
Conclusions:
- Simultaneous reduction malarplasty with zygomatic arch elevation effectively reduces masseter redundancy and mandibular hyperplasia.
- This combined surgical approach, utilizing a bracing technique with zygomatic arch elevation, can enhance aesthetic results in reduction mandibuloplasty.
- Consideration of simultaneous procedures is recommended for improved outcomes in maxillofacial contouring.
Related Concept Videos
03:11Oxidation-Reduction Reactions
75.8K
Oxidation–Reduction Reactions
75.8K
02:36Oxymercuration-Reduction of Alkenes
9.4K
Oxymercuration–reduction of alkenes is one of the major reactions converting alkenes to alcohols. It involves the hydration of alkenes with mercuric acetate in a mixture of tetrahydrofuran and water, forming an organomercury adduct. This is followed by a demercuration step in which the adduct is reduced to an alcohol using sodium borohydride.
9.4K
01:22Block Diagram Reduction
569
The process of deriving the transfer function of a control system often involves reducing its block diagram to a single block. This simplification can be achieved through a series of strategic operations, including relocating branch points and comparators. These operations preserve the overall function of the system while allowing for easier manipulation and combination of blocks.
The first step in this process is the identification and relocation of a branch point. A branch point, where a...
The first step in this process is the identification and relocation of a branch point. A branch point, where a...
569
01:27Phase I Reactions: Reductive Reactions
608
Phase I biotransformation reductive reactions are chemical processes that modify drugs by introducing or revealing polar functional groups via reduction. Enzymes called reductases catalyze these reactions, playing a pivotal role in drug metabolism by transforming lipophilic drugs into more polar, water-soluble metabolites for easy excretion. An essential type of reductive reaction is the carbonyl group reduction, where aldehydes and ketones are reduced to alcohols. An example is the...
608
01:17Esters to Alcohols: Hydride Reductions
4.8K
Esters are reduced to primary alcohols when treated with a strong reducing agent like lithium aluminum hydride. The reaction requires two equivalents of the reducing agent and proceeds via an aldehyde intermediate.
Lithium aluminum hydride is a source of hydride ions and functions as a nucleophile. The mechanism proceeds in three steps. Firstly, the nucleophilic hydride ion attacks the carbonyl carbon of the ester to form a tetrahedral intermediate. Subsequently, the carbonyl group re-forms,...
Lithium aluminum hydride is a source of hydride ions and functions as a nucleophile. The mechanism proceeds in three steps. Firstly, the nucleophilic hydride ion attacks the carbonyl carbon of the ester to form a tetrahedral intermediate. Subsequently, the carbonyl group re-forms,...
4.8K
02:23Alcohols from Carbonyl Compounds: Reduction
12.4K
Reduction is a simple strategy to convert a carbonyl group to a hydroxyl group. The three major pathways to reduce carbonyls to alcohols are catalytic hydrogenation, hydride reduction, and borane reduction.
Catalytic hydrogenation is similar to the reduction of an alkene or alkyne by adding H2 across the pi bond in the presence of transition metal catalysts like Raney Ni, Pd–C, Pt, or Ru. Aldehydes and ketones can be reduced by this method, often under mild to moderate heat (25–100°C) and...
Catalytic hydrogenation is similar to the reduction of an alkene or alkyne by adding H2 across the pi bond in the presence of transition metal catalysts like Raney Ni, Pd–C, Pt, or Ru. Aldehydes and ketones can be reduced by this method, often under mild to moderate heat (25–100°C) and...
12.4K